Jhonattan Vegas shot a 9-under 62 on Friday in the John Deere Classic to take a one-stroke lead into the weekend.
Vegas, the three-time PGA tour winner from Venezuela, had a 13-under 129 total at TPC Deere Run.
Andrew Landry was second after his second 65.
Lucas Glover had an albatross on the par-5 10th in a 64 that got him to 11 under. He holed out from 254 yards after a 318-yard drive.
Harold Varner III (65), Russell Henley (68), Daniel Berger (66), Cameron Tringale (66) and Adam Schenk (65) were 10 under.