The 2015 Virtual U.S. Open on WGT continues with the new Back 9 Challenge played on the last nine holes on Chambers Bay, host of the 2015 U.S. Open. Post your best score in this unlimited play closest-to-the-hole challenge. Two players, one with the top score and one lucky sweepstakes winner, will each receive a $500 Gift Card to USGAshop.com. See rules for details and eligibility.