Tiger Woods makes his first start at Riviera Country Club since 2006 alongside reigning PGA Tour player of the year Justin Thomas and four-time major champion Rory McIlroy (10:22 a.m. ET). Phil Mickelson, Matt Kuchar and Tommy Fleetwood are grouped (10:32). World No. 1 Dustin Johnson is out with Adam Scott and Bubba Watson (3:12 p.m.). And Jordan Spieth is playing with Patrick Cantlay and Kevin Chappell (3:02).