Representing Germany, JK is active in the Age of Empires II scene. Across all ladders, JK has played 952 matches. JK is most active in the ranked random map team ladder.

JK wins most often with Poles—54.6% in 97 games. With 30 matches on Oasis, JK holds a 56.7% win rate. JK wins 48.9% of matches when playing as pocket (450 matches).

RM Team records show JK at a rating of 1036. Over 813 RM Team games, JK has won 47.8% of the time.