“I started testing at the very start of 2015 and continued to test throughout the year until we found something that I really, really liked,” McIlroy told GolfDigest.com. “I saw a significance increase in my ball speed and iron distance. I feel like that has been a huge help to me in the three tournaments I’ve played with this ball. I don’t feel like I have to go after my irons as much. The new dimple pattern also helps it cut through the wind. I’m able to hit some shots that I wasn’t able to hit before.”