Mackey is a physical forward who embraces contact and uses his strength to power his way to the basket. He displayed good timing around the rim and consistently capitalized on second-chance scoring opportunities. When attacking off the dribble, he frequently looked to drive baseline, putting pressure on defenders and creating quality scoring chances. Mackey also showed a willingness to do the dirty work, setting solid screens for his guards and proving to be an effective roller in pick-and-roll action. Around the basket, he demonstrated soft touch and the ability to finish through traffic, making him a reliable interior scoring option.