Mark Cuban says if he were in charge of the ball at the center of the Giannis Antetokounmpo vs. Pacers tiff ... the Bucks superstar would be disappointed -- 'cause he would've given the memento to Indiana.
The Dallas Mavericks honcho didn't mince words when talking about the topic to TMZ Sports on Thursday ... saying, "if you have a rookie who's never scored before in an NBA game, that's a big deal that only happens once."
"So," he continued, "I'd give the ball to the rookie.