Key groups

Good friends Spieth and Thomas, the winners of the last two majors of 2017, are the featured group on Golf Channel’s coverage of Thursday’s first round (5:50 p.m. ET). Johnson is out with 2017 Tour Championship winner Schauffele (5:40 p.m.). Other top groups include Rickie Fowler and Hideki Matsuyama (5:20 p.m.) and reigning U.S. Open champion Brooks Koepka and Kevin Kisner (5:10 p.m.).