diff --git a/src/cgg_data_source.rs b/src/cgg_data_source.rs
index 2fe8787..7f43d39 100644
--- a/src/cgg_data_source.rs
+++ b/src/cgg_data_source.rs
@@ -95,6 +95,8 @@ fn extract_json(pattern: &str, page: &str) -> String {
 }
 
 impl DataSource for CGGDataSource {
+    fn init(&self, _client: &ureq::Agent) {}
+
     fn get_alias(&self) -> &str {
         "CGG"
     }
@@ -103,10 +105,10 @@ impl DataSource for CGGDataSource {
         0
     }
 
-    fn get_champs_with_positions_and_patch(
+    fn get_champs_with_positions(
         &self,
         client: &ureq::Agent,
-    ) -> (IndexMap<String, Vec<String>>, String) {
+    ) -> IndexMap<u32, Vec<String>> {
         let req = client.get("https://champion.gg").call().unwrap();
         let page = &req.into_string().unwrap();
 
@@ -122,11 +124,10 @@ impl DataSource for CGGDataSource {
                 .unwrap()
                 .insert(entry.0.to_owned(), entry.1.to_owned());
         }
-        let patch = datas.lol.champions_report[0].patch.to_owned();
 
-        let mut champions: IndexMap<String, Vec<String>> = IndexMap::new();
+        let mut champions: IndexMap<u32, Vec<String>> = IndexMap::new();
         for champ in &datas.lol.champions_report {
-            let id = champ.champion_id.to_string();
+            let id = champ.champion_id;
             if champions.contains_key(&id) {
                 let mut roles = champions.get(&id).unwrap().to_owned();
                 roles.push(champ.role.to_owned());
@@ -140,7 +141,7 @@ impl DataSource for CGGDataSource {
             CHAMPIONS_REPORT.lock().unwrap().push(report);
         }
 
-        (champions, patch)
+        champions
     }
 
     fn get_champ_data_with_win_pourcentage(
@@ -206,6 +207,7 @@ impl DataSource for CGGDataSource {
                         win_rate: stat.win_rate.unwrap(),
                         games: stat.games.unwrap(),
                         kda: stat.kda.unwrap(),
+                        patch: champ.patch.to_owned()
                     },
                 ));
             }
diff --git a/src/data_source.rs b/src/data_source.rs
index 93963a5..48a8615 100644
--- a/src/data_source.rs
+++ b/src/data_source.rs
@@ -35,17 +35,20 @@ pub struct Stat {
     pub win_rate: f64,
     pub games: u32,
     pub kda: f64,
+    pub patch: String
 }
 
 pub trait DataSource {
+    fn init(&self, client: &ureq::Agent);
+
     fn get_alias(&self) -> &str;
 
     fn get_timeout(&self) -> u64;
 
-    fn get_champs_with_positions_and_patch(
+    fn get_champs_with_positions(
         &self,
         client: &ureq::Agent,
-    ) -> (IndexMap<String, Vec<String>>, String);
+    ) -> IndexMap<u32, Vec<String>>;
 
     fn get_champ_data_with_win_pourcentage(
         &self,
@@ -58,7 +61,6 @@ pub trait DataSource {
         &self,
         champ: &ChampInfo,
         positions: &[String],
-        ver: &str,
         path: &PathBuf,
         client: &ureq::Agent,
     ) {
@@ -98,7 +100,7 @@ pub trait DataSource {
                     "{} {} {} - {:.2}% wins - {} games - {:.2} kda",
                     self.get_alias(),
                     build.0,
-                    ver,
+                    build.2.patch,
                     build.2.win_rate,
                     build.2.games,
                     build.2.kda
diff --git a/src/kb_data_source.rs b/src/kb_data_source.rs
index 98ec863..4cfe5bc 100644
--- a/src/kb_data_source.rs
+++ b/src/kb_data_source.rs
@@ -3,13 +3,12 @@ use crate::data_source::{Build, DataSource, Item, Stat};
 use crate::time::Duration;
 use crate::ChampInfo;
 use indexmap::IndexMap;
+use lazy_static::lazy_static;
 use serde_derive::Deserialize;
 use serde_json::{json, Value};
+use std::sync::Mutex;
 
-pub struct KBDataSource {
-    token: Option<String>,
-    internal_classname_mapping: IndexMap<String, String>,
-}
+pub struct KBDataSource;
 
 #[derive(Deserialize, Debug)]
 struct ChampionResponse {
@@ -74,8 +73,9 @@ struct KBBuild {
     #[serde(rename = "skillOrder")]
     skill_order: String,
     wins: f64,
-    games: f64,
+    games: u32,
     summoner: Summoner,
+    patch: Patch,
 }
 
 #[derive(Deserialize, Debug)]
@@ -90,17 +90,11 @@ struct Summoner {
     name: String,
 }
 
-impl KBDataSource {
-    pub fn new(client: &ureq::Agent) -> KBDataSource {
-        let mut datasource = KBDataSource {
-            token: None,
-            internal_classname_mapping: IndexMap::new(),
-        };
-        datasource.token = datasource.get_auth_token(client);
-        datasource.internal_classname_mapping = datasource.get_classname_mapping(client);
-        datasource
-    }
+lazy_static! {
+    static ref TOKEN: Mutex<Option<String>> = Mutex::new(None);
+}
 
+impl KBDataSource {
     // It will be better to use Result...
     fn get_auth_token(&self, client: &ureq::Agent) -> Option<String> {
         let mut bundle = match client.get("https://koreanbuilds.net/bundle.js").call() {
@@ -126,33 +120,22 @@ impl KBDataSource {
         }
     }
 
-    fn get_classname_mapping(&self, client: &ureq::Agent) -> IndexMap<String, String> {
-        let mut mapping = IndexMap::new();
-        if let Some(data) = self.get_champion_response(client) {
-            for champ in data.champions {
-                mapping.insert(champ.classname, champ.name);
-            }
-        };
-        mapping
-    }
-
     fn get_champion_response(&self, client: &ureq::Agent) -> Option<ChampionResponse> {
-        let token = match self.token.clone() {
-            Some(t) => t,
-            None => String::new(),
-        };
-        match client
-            .get("https://api.koreanbuilds.net/champions?patchid=-1")
-            .set("Accept", "application/json")
-            .set("Authorization", token.as_str())
-            .call()
-        {
-            Ok(resp) => match resp.into_json() {
-                Ok(val) => val,
+        if let Some(token) = TOKEN.lock().unwrap().as_ref() {
+            return match client
+                .get("https://api.koreanbuilds.net/champions?patchid=-1")
+                .set("Accept", "application/json")
+                .set("Authorization", token.as_str())
+                .call()
+            {
+                Ok(resp) => match resp.into_json() {
+                    Ok(val) => val,
+                    Err(_) => None,
+                },
                 Err(_) => None,
-            },
-            Err(_) => None,
+            };
         }
+        None
     }
 
     fn get_positions(position: Option<Position>) -> Vec<String> {
@@ -285,15 +268,22 @@ impl KBDataSource {
             build.position.to_owned().to_uppercase(),
             blocks,
             Stat {
-                win_rate: (build.wins / build.games) * 100.,
-                games: build.games as u32,
+                win_rate: (build.wins / build.games as f64) * 100.,
+                games: build.games,
                 kda: 0.0,
+                patch: build.patch.patch_version.to_owned(),
             },
         )
     }
 }
 
 impl DataSource for KBDataSource {
+    fn init(&self, client: &ureq::Agent) {
+        if let Some(t) = self.get_auth_token(client) {
+            TOKEN.lock().unwrap().replace(t);
+        }
+    }
+
     fn get_alias(&self) -> &str {
         "KB"
     }
@@ -302,25 +292,18 @@ impl DataSource for KBDataSource {
         300
     }
 
-    fn get_champs_with_positions_and_patch(
-        &self,
-        client: &ureq::Agent,
-    ) -> (IndexMap<String, Vec<String>>, String) {
+    fn get_champs_with_positions(&self, client: &ureq::Agent) -> IndexMap<u32, Vec<String>> {
         let mut champions = IndexMap::new();
         let data: ChampionResponse = match self.get_champion_response(client) {
             Some(val) => val,
             None => {
-                return (champions, String::new());
+                return champions;
             }
         };
-        let patch = match data.patches.get(0) {
-            Some(p) => p.patch_version.clone(),
-            None => return (champions, String::new()),
-        };
         for champ in data.champions {
-            champions.insert(champ.classname, KBDataSource::get_positions(champ.builds));
+            champions.insert(champ.id, KBDataSource::get_positions(champ.builds));
         }
-        (champions, patch)
+        champions
     }
 
     fn get_champ_data_with_win_pourcentage(
@@ -330,45 +313,42 @@ impl DataSource for KBDataSource {
         client: &ureq::Agent,
     ) -> Vec<(String, Vec<Value>, Stat)> {
         let mut champ_data = vec![];
-        if let Some(token) = self.token.clone() {
-            if let Some(map_id) = self.internal_classname_mapping.get(&champ.id) {
-                let data: BuildResponse = match client
-                    .get(&format!(
-                        "https://api.koreanbuilds.net/builds?chmpname={}&patchid=-2&position=COMPOSITE",
-                        map_id
-                    ))
-                    .set("Accept", "application/json")
-                    .set("Authorization", token.as_str())
-                    .call()
-                {
-                    Ok(resp) => match resp.into_json() {
-                        Ok(val) => val,
-                        Err(_) => {
-                            return vec![];
-                        }
-                    },
+        if let Some(token) = TOKEN.lock().unwrap().as_ref() {
+            let data: BuildResponse = match client
+                .get(&format!(
+                    "https://api.koreanbuilds.net/builds?chmpname={}&patchid=-2&position=COMPOSITE",
+                    champ.id
+                ))
+                .set("Accept", "application/json")
+                .set("Authorization", token.as_str())
+                .call()
+            {
+                Ok(resp) => match resp.into_json() {
+                    Ok(val) => val,
                     Err(_) => {
                         return vec![];
                     }
-                };
+                },
+                Err(_) => {
+                    return vec![];
+                }
+            };
 
-                for pos in position {
-                    let mut build: Option<&KBBuild> = None;
+            for pos in position {
+                let mut build: Option<&KBBuild> = None;
 
-                    for b in &data.builds2 {
-                        if b.position.to_uppercase() == *pos {
-                            build = Some(b);
-                            break;
-                        }
-                    }
-                    
-
-                    if let Some(b) = build {
-                        champ_data.push(self.get_build(&b));
+                for b in &data.builds2 {
+                    if b.position.to_uppercase() == *pos {
+                        build = Some(b);
+                        break;
                     }
                 }
+
+                if let Some(b) = build {
+                    champ_data.push(self.get_build(&b));
+                }
             }
-        };
+        }
         champ_data
     }
 }
@@ -379,10 +359,7 @@ mod tests {
 
     #[test]
     fn test_get_auth_token() {
-        let datasource = KBDataSource {
-            token: None,
-            internal_classname_mapping: IndexMap::new(),
-        };
+        let datasource = KBDataSource;
         let client = ureq::AgentBuilder::new()
             .timeout(Duration::from_secs(10))
             .build();
@@ -397,10 +374,11 @@ mod tests {
         let client = ureq::AgentBuilder::new()
             .timeout(Duration::from_secs(10))
             .build();
-        let datasource = KBDataSource::new(&client);
-        let champs_with_positions_and_patch =
-            datasource.get_champs_with_positions_and_patch(&client);
-        assert!(champs_with_positions_and_patch.0.len() > 0);
+        let datasource = KBDataSource;
+        datasource.init(&client);
+        let champs_with_positions =
+            datasource.get_champs_with_positions(&client);
+        assert!(champs_with_positions.len() > 0);
     }
 
     #[test]
@@ -408,15 +386,16 @@ mod tests {
         let client = ureq::AgentBuilder::new()
             .timeout(Duration::from_secs(10))
             .build();
-        let datasource = KBDataSource::new(&client);
+        let datasource = KBDataSource;
+        datasource.init(&client);
         let champ = ChampInfo {
-            id: String::from("Aatrox"),
-            name: String::from("Aatrox"),
+            id: String::from("Annie"),
+            name: String::from("Annie"),
             key: String::from("1"),
         };
         let result = datasource.get_champ_data_with_win_pourcentage(
             &champ,
-            &vec!["TOP".to_string()],
+            &vec!["MID".to_string()],
             &client,
         );
         assert!(!result.is_empty());
diff --git a/src/main.rs b/src/main.rs
index 05bbf2c..e5f82a7 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,5 +1,4 @@
 use indexmap::IndexMap;
-use lazy_static::lazy_static;
 #[cfg(target_os = "windows")]
 use log::debug;
 use log::{error, info, LevelFilter};
@@ -75,62 +74,53 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
         .init()?;
     info!("CGG Item Sets");
 
-    lazy_static! {
-        static ref LOL_CHAMPS_DIR: PathBuf = match lol_champ_dir() {
-            Ok(x) => x,
-            Err(_e) => PathBuf::from(DEFAULT_LOL_CHAMPS_DIR),
-        };
-        static ref CLIENT: ureq::Agent = ureq::AgentBuilder::new()
-            .user_agent(USER_AGENT_VALUE)
-            .timeout(Duration::from_secs(10))
-            .build();
-        static ref REALM: Realm = CLIENT
-            .get("https://ddragon.leagueoflegends.com/realms/euw.json")
-            .call()
-            .unwrap()
-            .into_json()
-            .unwrap();
-        static ref CHAMPION: Champion = CLIENT
-            .get(&format!(
-                "https://ddragon.leagueoflegends.com/cdn/{}/data/en_US/champion.json",
-                REALM.v
-            ))
-            .call()
-            .unwrap()
-            .into_json()
-            .unwrap();
-        static ref DATA_SOURCES: Vec<Box<dyn DataSource + Sync + Send>> = vec![
-            Box::new(PBDataSource),
-            Box::new(CGGDataSource),
-            Box::new(KBDataSource::new(&CLIENT)),
-        ];
-    }
+    let lol_champs_dir: PathBuf = match lol_champ_dir() {
+        Ok(x) => x,
+        Err(_e) => PathBuf::from(DEFAULT_LOL_CHAMPS_DIR),
+    };
+    info!("LoL Champs Folder: {}", lol_champs_dir.to_str().unwrap());
 
-    info!("LoL Champs Folder: {}", LOL_CHAMPS_DIR.to_str().unwrap());
-    info!("LoL version: {}", REALM.v);
-    info!("LoL numbers of champs: {}", CHAMPION.data.len());
+    let client: ureq::Agent = ureq::AgentBuilder::new()
+        .user_agent(USER_AGENT_VALUE)
+        .timeout(Duration::from_secs(10))
+        .build();
 
-    let mut threads = vec![];
-    for data_source in DATA_SOURCES.iter() {
-        threads.push(thread::spawn(move || {
-            let init = Instant::now();
-            execute_data_source(&data_source, &CLIENT, &CHAMPION, &LOL_CHAMPS_DIR);
-            info!(
-                "{}: done in {} ms",
-                data_source.get_alias(),
-                init.elapsed().as_millis()
-            );
-        }));
-    }
-    for child in threads {
-        let _ = child.join();
-    }
+    let realm: Realm = client
+        .get("https://ddragon.leagueoflegends.com/realms/euw.json")
+        .call()?
+        .into_json()?;
+    info!("LoL version: {}", realm.v);
+    
+    let champion: Champion = client
+        .get(&format!(
+            "https://ddragon.leagueoflegends.com/cdn/{}/data/en_US/champion.json",
+            realm.v
+        ))
+        .call()?
+        .into_json()?;
+    info!("LoL numbers of champs: {}", champion.data.len());
+
+    static DATA_SOURCES: [&'static (dyn DataSource + Sync + Send); 3] = [
+        &PBDataSource,
+        &CGGDataSource,
+        &KBDataSource,
+    ];
+    DATA_SOURCES.par_iter().for_each(|data_source| {
+       
+        let init = Instant::now();
+        execute_data_source(*data_source, &client, &champion, &lol_champs_dir);
+        info!(
+            "{}: done in {} ms",
+            data_source.get_alias(),
+            init.elapsed().as_millis()
+        );
+    });
     Ok(())
 }
 
-fn get_champ_from_key(champs: &Champion, key: &str) -> Option<String> {
+fn get_champ_from_key(champs: &Champion, key: u32) -> Option<String> {
     for champ in champs.data.values() {
-        if key == champ.key {
+        if key.to_string() == champ.key {
             return Some(champ.id.to_owned());
         }
     }
@@ -138,14 +128,15 @@ fn get_champ_from_key(champs: &Champion, key: &str) -> Option<String> {
 }
 
 fn execute_data_source(
-    data_source: &Box<dyn DataSource + Sync + Send>,
+    data_source: &(dyn DataSource + Sync + Send),
     client: &ureq::Agent,
     champion: &Champion,
     lol_champs_dir: &PathBuf,
 ) {
-    let (champs, patch) = data_source.get_champs_with_positions_and_patch(&client);
+    data_source.init(client);
+
+    let champs = data_source.get_champs_with_positions(&client);
 
-    info!("{} version: {}", data_source.get_alias(), patch);
     info!(
         "{} numbers of champs: {}",
         data_source.get_alias(),
@@ -159,8 +150,7 @@ fn execute_data_source(
                 client,
                 champion,
                 lol_champs_dir,
-                &patch,
-                id,
+                *id,
                 positions,
             );
         });
@@ -171,8 +161,7 @@ fn execute_data_source(
                 client,
                 champion,
                 lol_champs_dir,
-                &patch,
-                id,
+                *id,
                 positions,
             );
             thread::sleep(Duration::from_millis(data_source.get_timeout()));
@@ -181,32 +170,25 @@ fn execute_data_source(
 }
 
 fn get_and_write_item_set(
-    data_source: &Box<dyn DataSource + Sync + Send>,
+    data_source: &(dyn DataSource + Sync + Send),
     client: &ureq::Agent,
     champion: &Champion,
     lol_champs_dir: &PathBuf,
-    patch: &str,
-    id: &str,
+    id: u32,
     positions: &[String],
 ) {
-    let mut champ_id: String = id.to_owned();
-
-    if id.parse::<u32>().is_ok() {
-        if let Some(c_id) = get_champ_from_key(&champion, &champ_id) {
-            champ_id = c_id;
-        }
-    }
-
-    if let Some(champ) = champion.data.get(&champ_id) {
-        if positions.is_empty() {
-            error!("{}: {} empty positions", data_source.get_alias(), &champ_id);
+    if let Some(champ_id) = get_champ_from_key(&champion, id) {
+        if let Some(champ) = champion.data.get(&champ_id) {
+            if positions.is_empty() {
+                error!("{}: {} empty positions", data_source.get_alias(), &champ_id);
+            } else {
+                let path = lol_champs_dir.join(&champ_id).join("Recommended");
+                fs::create_dir_all(&path).unwrap();
+                data_source.write_item_set(&champ, &positions, &path, &client);
+            }
         } else {
-            let path = lol_champs_dir.join(&champ_id).join("Recommended");
-            fs::create_dir_all(&path).unwrap();
-            data_source.write_item_set(&champ, &positions, &patch, &path, &client);
+            error!("{} not found in LoL champs", &champ_id);
         }
-    } else {
-        error!("{} not found in LoL champs", &champ_id);
     }
 }
 
diff --git a/src/pb_data_source.rs b/src/pb_data_source.rs
index 615189b..4dfa50b 100644
--- a/src/pb_data_source.rs
+++ b/src/pb_data_source.rs
@@ -6,6 +6,8 @@ use crate::ChampInfo;
 
 pub struct PBDataSource;
 impl DataSource for PBDataSource {
+    fn init(&self, _client: &ureq::Agent) {}
+
     fn get_alias(&self) -> &str {
         "PB"
     }
@@ -14,11 +16,11 @@ impl DataSource for PBDataSource {
         0
     }
 
-    fn get_champs_with_positions_and_patch(
+    fn get_champs_with_positions(
         &self,
         _client: &ureq::Agent,
-    ) -> (IndexMap<String, Vec<String>>, String) {
-        (IndexMap::new(), String::new())
+    ) -> IndexMap<u32, Vec<String>> {
+        IndexMap::new()
     }
 
     fn get_champ_data_with_win_pourcentage(