The NBA fined several players $15,000 each for participating in an unsanctioned Washington alumni basketball game, NBA sources told Yahoo! Sports on Tuesday.

The NBA fined Philadelphia forward Spencer Hawes, Memphis Grizzlies guards Quincy Pondexter and Tony Wroten and Sacramento guard Isaiah Thomas for participating in a June 23 game at Alaska Airlines Arena, according to the Yahoo! Sports report.

It wasn’t immediately known if several other former Huskies involved in the game, including Nate Robinson, a Chicago Bulls free-agent guard, and Toronto Raptors guard Terrence Ross, were subject to the fines.