There's been a big change at the British Open that has caddies and players perplexed.

Rahm wonders how different it might have been if not for his mental blunder. I was like, that extra-shot cushion would be extremely nice right now, I'm not going to lie, Rahm said. He followed that with a 30-foot birdie putt across the 16th green for a two-shot lead. The heart rate never eased up as Rahm watched Johnson's 30-foot birdie putt track toward the cup until it peeled away by inches and Rahm was the winner. Johnson shot 67 at the BMW Championship and lost to a 65-foot birdie putt in a playoff.