Leading scores after the first round of the 3M Open at TPC Twin Cities at Blaine, Minnesota on Thursday (par 71; USA unless stated) 63 - Richy Werenski 64 - Michael Thompson 65 - Tony Finau, Ryan Moore, Nick Watney, Matthew Wolff, Max Homa, Zhang Xinjun (CHN), Bo Hoag 66 - Kyle Stanley, Brendon de Jonge (ZIM), Talor Gooch, Patrick Rodgers, Bo Van Pelt, Bronson Burgoon, Robert Garrigus, Charl Schwartzel (RSA) Aaron Baddeley (AUS), Chris Kirk