At 6'2.5" and 193 pounds, Harris has a long frame that should be able to add more mass and bulk at LSU. He has quick feet, evidenced by his ability to get to his launching point in a flash during his drops.
Harris does an adequate job of keeping his eyes downfield during the play, which is why he has no problem making throws with defenders in his face. He's an explosive athlete who has a knack for executing fakes, plus he can explode out of the pocket due to his sudden movement skills when traffic gets heavy.
Harris has the mobility to be used on roll-outs, sprints and bootlegs, as he can make good throws on the run. He appears to have a quick release, but his arm strength is his best trait.
Harris has a cannon that can attack all levels of the field with ease. The Louisiana native can spin the ball well on intermediate throws, plus he can fire strikes into tight windows. His accuracy is at his best when his feet are set, but Harris is capable of consistently getting the ball to his targets on various platforms.
His athleticism and above-average speed for a quarterback also make him a dangerous runner.