FORT WORTH, Texas — Justin Rose considered his first 15 holes in the second round at Colonial pretty flawless. The last three worked out OK, too, even with the only bogey for the leader of the Fort Worth Invitational.

“Last three holes got a bit scrappy,” Rose said after a 6-under 64 that got him to 10 under Friday at Hogan’s Alley.

After missing the green at the 422-yard seventh hole, the Englishman chipped in from 16 feet for a birdie. He missed the green again at the par-3 eighth for a bogey. Then after his tee shot into the rough and an approach that just cleared the water fronting his final hole, the world’s fifth-ranked player two-putted for a par.

That was good enough for one-stroke lead over Argentina’s Emiliano Grillo , whose 67 included six consecutive holes without a par. Defending U.S. Open champion Brooks Koepka (63) and Satoshi Kodaira (67) were 7 under.

The birdie at the 457-yard 14th hole was the first of three consecutive birdies for Rose.