Harrison Browne is retiring in style.

The transgender hockey player and his team, the Buffalo Beauts, won the league championship for the inaugural season of the National Women’s Hockey League on Sunday, beating the Boston Pride, 3-2, in the championship game.

The Pride had lost only one game during their 17-game regular season. The Beauts came into the NWHL playoffs seeded third of the four teams in the league.

The Beauts had a losing record in the regular season, going 6-10-1 during the season. It’s hard to remember another professional team that won a league championship after posting a 38% winning percentage for the season.

Browne was active on Twitter last night celebrating.

Browne announced his retirement from women’s hockey last week, saying he wanted to complete his transition. NWHL rules about gender do not allow him to take testosterone and continue to compete as a woman in the league.

Browne has been heralded as the first publicly out trans athlete in North American professional sports.