AUGUSTA, Ga. — Rory McIlroy raced out to the best start the Masters has seen in its 91-year history, with six straight 3s on his scorecard that shot him into the lead Saturday and left him 18 holes away from that coveted green jacket and the career Grand Slam.

McIlroy chipped in for eagle as part of his amazing start.

And then he delivered another eagle late in the round as contenders were lining up behind him, a majestic 6-iron to 6 feet on the par-5 15th hole that carried him to a second straight 6-under 66.

“It was an awesome day and puts me in a great position going into tomorrow,” McIlroy said.

He led by two shots over a familiar foe — Bryson DeChambeau, who delivered some magic of his own with a 45-foot birdie putt to start his round and a putt from nearly 50 feet for birdie on the 18th hole that gave him a 69.

It was DeChambeau who crushed McIlroy’s spirit last year at Pinehurst No. 2 by beating him at the U.S. Open, stretching McIlroy’s drought in the majors to more than a decade.