Willem Killem's strongest map performance is on Arabia: 56.2% wins in 121 games. Willem Killem has the highest win rate in the pocket position: 48.6% over 107 games. Willem Killem has reached a rating of 1023 in RM Team.

Willem Killem has 567 games played, with ranked random map team as their primary ladder. Willem Killem represents Netherlands with a 50.8% record in RM Team and a 64.7% win rate with Portuguese.