With 531 matches as flank, Kowalski holds a 52.4% win rate. Kowalski represents Czechia in Age of Empires II with 1244 matches under their belt. In RM Team, Kowalski has reached 1366. Their RM 1v1 win rate stands at 61.9%.

Kowalski mainly plays ranked random map team, wins most with Spanish (56.4%), and performs best on Nomad (59.5%).