Late last year, after DeChambeau’s U.S. Open victory, McIlroy, already one of the longest hitters on the tour, altered his swing in an attempt to add even more yardage to his drives.“I’d be lying if I said it wasn’t anything to do with what Bryson did at the U.S. Open,” McIlroy said. “I think a lot of people saw that and were like, ‘Whoa, if this is the way they’re going to set golf courses up in the future, it helps.’”McIlroy now considers that a mistake.“I thought being able to get some more speed is a good thing,” he said. “And maybe — to the detriment a little bit of my swing — I got there. But I just need to maybe rein it back in a little bit.”