October 10-13
GC of Houston, Humble, Texas
$7,500,000
Round 2, Round 3, Round 4

Talor Gooch equalled the lowest round of his career with an eight-under 64 to give him a tie of the Houston Open lead with Austin Cook.

The 27-year-old carded a career-best 10 birdies and saved par with his longest putt on the PGA Tour - more than 63 feet - to keep pace with Cook, who hit 18 greens in regulation for the first time and whose 29 going out was his lowest front-nine score.

"Any time you have double-digit birdies you're doing something right. It was a fun day," Gooch told pgatour.com.

The pair only lead by one, however, from Austrian Sepp Straka with 13 players at five under or better.

Ireland's Seamus Power was in the five-man group on 67, which also included Houston native Cole Hammer, the second-ranked amateur in the world making his regular PGA Tour debut after his 2015 US Open appearance as a 15-year-old.

Hammer is a regular at the Golf Club of Houston, playing his first round there as a 10-year-old, and used his local knowledge to shoot eight birdies, equalling Tiger Woods' best as an amateur with only Ty Tryon making more since 1996.

Former Open champion Henrik Stenson, a two-time runner-up at this tournament, is in danger of missing the cut after a level-par 72 left him eight off the lead.