Hajnlik is among the Age of Empires II players representing Czechia. Hajnlik's profile shows 121 completed matches in Age of Empires II. Hajnlik has a clear preference for the ranked random map 1v1 ladder.

Hajnlik tends to pick Franks most often, with a pick rate of 69.4%. Hajnlik has a 68.0% win rate with Franks over 75 matches. Hajnlik has played 53 matches on Arena and won 75.5%.

Hajnlik has the highest win rate in the flank position: 76.5% over 17 games. RM Team records show Hajnlik at a rating of 1727. Hajnlik has a win rate of 80.5% in RM Team (41 games played).