Harris English and three others were tied atop the leaderboard after the opening round of The Northern Trust on Thursday at TPC Boston in Norton, Mass.
English, along with Kevin Streelman, Cameron Davis and Russell Henley, opened with 7-under 64s to finish the first round in a four-way tie. English had an eagle on hole No. 2 to go with seven birdies and two bogeys on the day.
Henley and Streelman both had eagles on the back nine, while Davis had eight birdies and one bogey.
Bubba Watson was among the seven players who sat one shot back of the lead at 6-under par. Tommy Fleetwood and Daniel Berger were in the even bigger logjam at 5-under and tied for 12th.
Tiger Woods opened with a 68 after sinking five birdies over his final 10 holes. He was tied for 30th with Justin Thomas, Xander Schauffele and Patrick Reed, among others.