Even though LeBron James registered his 29th career triple-double and first with the Heat--with 20 points, 14 assists and 11 rebounds--it was the fourth-year pro from Louisiana Tech who stole the show.
Millsap, who has spent most of his career in a reserve role behind Carlos Boozer, went off late in the fourth quarter.
Millsap--known for his rebounding and scoring in the paint rather than his outside shooting--drilled three consecutive 3-pointers in the final 27.2 seconds of regulation to give the Jazz a chance at the end of the game.
He then added a tip-in as time expired to send the game into overtime after the Jazz entered the second half down by 19 points to LeBron James, Dwyane Wade and the new-look Heat.
Millsap's incredible scoring effort catapulted a 72-point second half for the Jazz that forced the Heat into an extra five minutes of play.
Utah eventually won the game, sending the Miami crowd into shock after it looked like the Heat had the game won early on.