Bronny James took flight at the McDonald's All-American dunk contest on Monday night ... leaping over his younger bro for a sick slam -- but in the end, it wasn't enough to beat out a Duke commit to win the event.
LeBron's offspring participated in the prestigious skills competition two decades after The King won it all back in 2003 ... and the 18-year-old came thiiiiiiis close to repeating Dad's feat.
Bronny, a 6-foot-3 shooting guard, opened the competition with a self-lob, reverse dunk that scored a 65/70.