Yahoo Sports reports: A pair of US Open winners in Wyndham Clark and JJ Spaun were in a four-way tie for the lead alongside Tommy Fleetwood and Ryan Gerard after the first round of the PGA Tour Memorial tournament on Thursday.Clark rolled in a 45-foot eagle putt from the fringe at 15 and added five birdies in his five-under round while Gerard had an eagle, eight birdies, three bogeys and a double bogey.