Fans clamoring for a showdown between heavyweights Brooks Koepka and Bryson DeChambeau will have to wait. The U.S. Open tees off at Torrey Pines with those two essentially starting on opposite sides of the bracket, meaning a head-to-head matchup can’t happen until the weekend. “We don’t like each other,” Koepka said. “It doesn’t matter to me what goes on,” DeChambeau lobbed back. The good news is fans won’t lack for entertainment. A deep field includes local hero Phil Mickelson, 51 and fresh off a win at last month’s PGA Championship, Jon Rahm, Jordan Spieth and Justin Thomas.