The U.S. Open

us_open_golf_81477.jpg

Jason Day, of Australia, looks down on the ninth hole during the second round of the U.S. Open golf tournament Friday, June 16, 2017, at Erin Hills in Erin, Wis. (AP Photo/Chris Carlson)

us_open_golf_06093.jpg

Rickie Fowler hits a drive on the seventh hole during the second round of the U.S. Open golf tournament Friday, June 16, 2017, at Erin Hills in Erin, Wis. (AP Photo/Chris Carlson)

us_open_golf_64258.jpg

Jason Day, of Australia, reacts on the ninth hole during the second round of the U.S. Open golf tournament Friday, June 16, 2017, at Erin Hills in Erin, Wis. (AP Photo/Chris Carlson)

us_open_golf_86218.jpg

Jason Day, of Australia, and Rory McIlroy, of Ireland, shake hands after the second round of the U.S. Open golf tournament Friday, June 16, 2017, at Erin Hills in Erin, Wis. (AP Photo/Chris Carlson)

us_open_golf_66015.jpg

Rory McIlroy, of Ireland, hits to the 12th green during the second round of the U.S. Open golf tournament Friday, June 16, 2017, at Erin Hills in Erin, Wis. (AP Photo/David J. Phillip)

us_open_golf_69341.jpg

Xander Schauffele watches his putt on the ninth hole during the second round of the U.S. Open golf tournament Friday, June 16, 2017, at Erin Hills in Erin, Wis. (AP Photo/Chris Carlson)

us_open_golf_96299.jpg

Si Woo Kim, of South Korea, hits from a bunker on the ninth hole during the second round of the U.S. Open golf tournament Friday, June 16, 2017, at Erin Hills in Erin, Wis. (AP Photo/Chris Carlson)

us_open_golf_26579.jpg

Cameron Champ looks to hit out of the fescue on the seventh hole during the second round of the U.S. Open golf tournament Friday, June 16, 2017, at Erin Hills in Erin, Wis. (AP Photo/Charlie Riedel)

us_open_golf_23485.jpg

Paul Casey, of England, hits from the 15th tee during the second round of the U.S. Open golf tournament Friday, June 16, 2017, at Erin Hills in Erin, Wis. (AP Photo/David J. Phillip)

Paul Casey, of England, reacts after missing a putt on the fifth hole during the second round of the U.S. Open golf tournament Friday, June 16, 2017, at Erin Hills in Erin, Wis. (AP Photo/Charlie Riedel)

us_open_golf_37203.jpg

Sergio Garcia, of Spain, reacts after putting on the ninth hole during the second round of the U.S. Open golf tournament Friday, June 16, 2017, at Erin Hills in Erin, Wis. (AP Photo/Chris Carlson)

us_open_golf_62910.jpg

Rory McIlroy, of Ireland, looks over the 12th hole during the second round of the U.S. Open golf tournament Friday, June 16, 2017, at Erin Hills in Erin, Wis. (AP Photo/David J. Phillip)

us_open_golf_35604.jpg

Xander Schauffele hits on the 12th hole during the second round of the U.S. Open golf tournament Friday, June 16, 2017, at Erin Hills in Erin, Wis. (AP Photo/David J. Phillip)

us_open_golf_76148.jpg

Xander Schauffele waves on the sixth hole during the second round of the U.S. Open golf tournament Friday, June 16, 2017, at Erin Hills in Erin, Wis. (AP Photo/Chris Carlson)

us_open_golf_34241.jpg

Paul Casey, of England, hits on the 14th hole during the second round of the U.S. Open golf tournament Friday, June 16, 2017, at Erin Hills in Erin, Wis. (AP Photo/David J. Phillip)

us_open_golf_24376.jpg

Paul Casey, of England, looks at his ball in the fescue on the 14th hole during the second round of the U.S. Open golf tournament Friday, June 16, 2017, at Erin Hills in Erin, Wis. (AP Photo/David J. Phillip)

us_open_golf_11073.jpg

Paul Casey, of England, reacts after his birdie on the 11th hole during the second round of the U.S. Open golf tournament Friday, June 16, 2017, at Erin Hills in Erin, Wis. (AP Photo/David J. Phillip)

us_open_golf_71351.jpg

Sergio Garcia, of Spain, hits a drive on the 12th hole during the second round of the U.S. Open golf tournament Friday, June 16, 2017, at Erin Hills in Erin, Wis. (AP Photo/David J. Phillip)

us_open_golf_87339.jpg

Brendan Steele hits a drive on the fifth hole during the second round of the U.S. Open golf tournament Friday, June 16, 2017, at Erin Hills in Erin, Wis. (AP Photo/Charlie Riedel)

us_open_golf_02543.jpg

Rory Mcilroy, of Ireland, and Jason Day, of Australia, walk on the eighth hole during the first round of the U.S. Open golf tournament Thursday, June 15, 2017, at Erin Hills in Erin, Wis. (AP Photo/Charlie Riedel)