Examine the swings of the game's biggest hitters and you'll see the vast majority have two similarities: (1) a big backswing with the left arm bending at the top; (2) the club travelling a long way back to the ball to gather more clubhead speed.But that's not how Jon Rahm cranks drives more than 320 yards. And he does that a lot."He's a big, strong man with incredible athletic power," says Golf Digest 50 Best Teacher Randy Smith. "He keeps that left arm straight and smashes the ball with swing width, not length. Not many can do that."Rahm's clubhead speed (119 miles per hour) is a big reason he's ranked in the top five of the tour's Strokes Gained/Off-the-Tee statistic. It's also probably no coincidence that he's No. 3 in the World Golf Ranking."The positions you see here are so good, they look posed," Smith says. "He uses his physique and strength to make a simple swing. It's like a bigger, harder version of Henrik Stenson's swing. Jon hits it so simple and so square, it's easy to see why his career is on the rise." — Matthew Rudy