With nine one-putts in his first 12 holes and 10 drives longer than 320 yard

McIlroy posted a 5-under 65 to grab the lead after the first 18 hole

It was the fourth time in his career that he shot 65 or better in the opening round of a major

the most by any player in the Masters era

according to data from ESPN Stats & Information

"I've been playing well coming in here," McIlroy said

"I've been carrying some good form

Obviously, I took a lot from that last round at Augusta

played well up in D.C. at the Wells Fargo, and played good in the practice rounds earlier this week