FIRST DAY SCORES IN AUSTIN

Tommy Fleetwood (Eng) bt Byeonghun An (Kor) 3&2

Louis Oosthuizen (Rsa) lost to Kyle Stanley (US) 3&2

Bryson Dechambeau (US) bt Russell Knox (Sco) 3&1

Marc Leishman (Aus) bt Kiradech Aphibarnrat (Tha) two holes

Tony Finau (US) bt Keith Mitchell (US) 2&1

Ian Poulter (Eng) bt Kevin Kisner (US) two holes

Brooks Koepka (US) halved with Tom Lewis (Eng)

Alex Noren (Swe) lost to Haotong Li (Chn) 5&4

Paul Casey (Eng) bt Abraham Ancer (Mex) 5&4

Cameron Smith (Aus) lost to Charles Howell III (US) 2&1

Francesco Molinari (Ita) bt Satoshi Kodaira (Jpn) 5&4

Webb Simpson (US) lost Thorbjorn Olesen (Den) 2&1

Bubba Watson (US) lost to Kevin Na (US) one hole

Jordan Spieth (US) halved with Billy Horschel (US)

Justin Rose (Eng) bt Emiliano Grillo (Arg) 2&1

Gary Woodland (US) bt Eddie Pepperell (Eng) 2&1

Jason Day (Aus) lost to Jim Furyk (US) two holes

Phil Mickelson (US) lost to Henrik Stenson (Swe) 2&1

Justin Thomas (US) lost to Lucas Bjerregaard (Den) 3&2

Rory Mcilroy (Nirl) bt Luke List (US) 5&4