Kaminsky showed up for Monday night's NBA preseason matchup with the Bulls in Chicago wearing a Steve Bartman Cubs jersey.
The Cubs had a 3-0 lead over the Marlins and were five outs from making their first World Series since 1945 in the 2003 National League Championship Series when Bartman deflected a foul ball that appeared destined to land in left fielder Moises Alou's glove. The Cubs went on to lose the game and the series.
Kaminsky grew up in suburban Chicago and is a fan of the Cubs' crosstown-rival Chicago White Sox.
He engaged in a Twitter exchange with the Cubs Monday night:
WLS-TV contributed to this report.