Séamus Power carded an opening 67 at the 3M Open, but is seven shots behind leader Adam Svensson, who posted an impressive round of 60.
Canadian Swensson had already nine birdies on his card before an eagle at the last moved him to 11-under at TPC Twin Cities.
He is two shots clear of American Sam Stephens, with compatriot Chad Ramey a further shot back on eight-under. Ricky Fowler is among a group of four players tied for fifth on six-under par.
In a congested field, Power is in a share of 22nd on four-under.
A strong finish saw him pick up four shots on the inward nine, this after a couple of early bogeys.
