Miami Heat legend asks Summer League athletes to step up to the plate and swing for the fences, especially when faced with the Cooper Flaggs and Bronny James.

The 19-year-old guard recorded a double-double (16 points, 10 rebounds) along with four assists, a block, and a steal in 6 minutes of action. He was the game's leading scorer right behind teammate KJ Simpson, who logged 18 points and seven assists. Both Flagg and Knueppel had standout freshmen seasons at Duke last year.