Bryson DeChambeau’s self-imposed weakness is holding him back

With better iron play, he would have multiple major wins in the last two years. 

Another issue with DeChambeau's approach strategy is that he puts all his strength into every iron shot and launches them straight into the air. That creates more spin and leaves the ball vulnerable to more wind, so it's much harder for him to judge distances and be precise with his approach shots.

DeChambeau is starting to realize the error in his ways, so there may be some changes on the horizon. 

"I gotta learn how to be a little more precise with the wind—not let the wind affect the ball as much," DeChambeau said during his CBS interview following the final round of the PGA Championship. "It’s a tough task to do because I hit it so high, and the ball just kinda moves in the air. I gotta figure that out. I’ve got some tricks up my sleeve that I’m going to be working on, hopefully bring for the U.S. Open, but, gotta get some equipment here soon."

With the way DeChambeau drives the ball, chips and putts, he has the tools to be the best player in the world. But iron play is the skill most indicative of success in professional golf, so DeChambeau won't reach his full potential until he improves his approach game.