diff --git a/examples/atp.rs b/examples/atp.rs
index 9389a95..bfc77d8 100644
--- a/examples/atp.rs
+++ b/examples/atp.rs
@@ -1,29 +1,5 @@
-/*
-use std::collections::HashMap;
-
 use time::Date;
-
-use trueskill_tt::{History, PlayerIndex, BETA, MU, P_DRAW};
-
-struct Players(HashMap<String, PlayerIndex>);
-
-impl Players {
-    fn new() -> Self {
-        Self(HashMap::new())
-    }
-
-    fn get(&mut self, name: &str) -> PlayerIndex {
-        if let Some(idx) = self.0.get(name) {
-            *idx
-        } else {
-            let idx = PlayerIndex::new(self.0.len());
-
-            self.0.insert(name.to_string(), idx);
-
-            idx
-        }
-    }
-}
+use trueskill_tt::{History, IndexMap};
 
 fn main() {
     let mut csv = csv::Reader::open("examples/atp.csv").unwrap();
@@ -34,26 +10,26 @@ fn main() {
 
     let time_format = time::format_description::parse("[year]-[month]-[day]").unwrap();
 
-    let mut players = Players::new();
+    let mut index_map = IndexMap::new();
 
     for row in csv.records() {
         if &row["double"] == "t" {
-            let w1_id = players.get(&row["w1_id"]);
-            let w2_id = players.get(&row["w2_id"]);
+            let w1_id = index_map.get_or_create(&row["w1_id"]);
+            let w2_id = index_map.get_or_create(&row["w2_id"]);
 
-            let l1_id = players.get(&row["l1_id"]);
-            let l2_id = players.get(&row["l2_id"]);
+            let l1_id = index_map.get_or_create(&row["l1_id"]);
+            let l2_id = index_map.get_or_create(&row["l2_id"]);
 
             composition.push(vec![vec![w1_id, w2_id], vec![l1_id, l2_id]]);
         } else {
-            let w1_id = players.get(&row["w1_id"]);
+            let w1_id = index_map.get_or_create(&row["w1_id"]);
 
-            let l1_id = players.get(&row["l1_id"]);
+            let l1_id = index_map.get_or_create(&row["l1_id"]);
 
             composition.push(vec![vec![w1_id], vec![l1_id]]);
         }
 
-        results.push(vec![1, 0]);
+        results.push(vec![1.0, 0.0]);
 
         let time = Date::parse(&row["time_start"], &time_format)
             .unwrap()
@@ -61,68 +37,13 @@ fn main() {
             .assume_utc()
             .unix_timestamp();
 
-        times.push(time as f64 / (60 * 60 * 24) as f64);
+        times.push(time as u64 / (60 * 60 * 24));
     }
 
-    /*
-    let mut history = History::builder()
-        .sigma(1.6)
-        .gamma(0.036)
-        .priors(priors)
-        .build::<Time>();
+    let mut hist = History::builder().sigma(1.6).gamma(0.036).build();
 
-    history.add_event(teams: [[a, b], [c]], result: [1, 0], 0.0);
-
-    let mut history = History::builder()
-        .sigma(1.6)
-        .gamma(0.036)
-        .priors(priors)
-        .build::<NoTime>();
-
-    history.add_event(teams: [[a, b], [c]], result: [1, 0]);
-
-    history.convergence(Ctx::default());
-    history.convergence(Ctx { epsilon: 1.6, ..Default::default() });
-    history.convergence(Ctx { epsilon: 1.6, iterations: 10 });
-
-    history.convergence().run();
-
-    history
-        .convergence()
-        .epsilon(1.6)
-        .run();
-
-    history
-        .convergence()
-        .epsilon(1.6)
-        .iterations(10)
-        .run();
-
-    history
-        .convergence()
-        .epsilon(1.6)
-        .iterations(10)
-        .inspect(|step, i| println!("Iteration {}: step={:?}", i, step))
-        .run();
-
-    */
-
-    let mut h = History::new(
-        &composition,
-        &results,
-        &times,
-        HashMap::new(),
-        MU,
-        1.6,
-        BETA,
-        0.036,
-        P_DRAW,
-    );
-
-    h.epsilon = 0.01;
-    h.iterations = 10;
-
-    h.convergence();
+    hist.add_events(composition, results, times, vec![]);
+    hist.convergence(10, 0.01, true);
 }
 
 mod csv {
@@ -194,8 +115,3 @@ mod csv {
         }
     }
 }
-*/
-
-fn main() {
-    //
-}