The 2017 Virtual U.S. Open on WGT continues with the Back 9 Challenge played on the back nine holes of Erin Hills, host of the 117th U.S. Open. Post your best score in this unlimited play closest-to-the-hole challenge. Two players, both the top leaderboard score and one lucky sweepstakes winner chosen at random, will each receive a $500 e-gift card to USGAshop.com. See rules for details and eligibility.