A weather front passed through sweltering TPC Twin Cities on Saturday, lowering the dew point, dialing up a gusting northerly wind and jamming the 3M Open leaderboard with contenders galore.
By evening's light, 20 players — including four past major champions — were within four strokes of third-round leader Cameron Tringale, who tied for third last summer in Blaine.
Promising young star Maverick McNealy and 2019 U.S. Open champ Gary Woodland were one shot behind Tringale.
Former Honda Classic winner Keith Mitchell birdied his first seven holes — tying a tour record for most birdies to start a round — in Saturday's morning calm, and Woodland himself followed an opening double bogey by making birdie on five of his next six holes.
"It was gettable early," veteran tour pro Pat Perez said.
Perez shot a front-nine 31 that included four birdies. He was tied for fourth, two shots behind Tringale.
Then the wind turned blustery and unfamiliar compared with previous tournament and practice days. Mitchell's seven birdies "absolutely" had him considering a 59 before two back-side bogeys gave him a 5-under 66 that left him four shots from the lead.
He was asked if he could get his head around a round so dissimilar between its two nines.