Nick Williams has played last game for Ulster, says Les Kiss

Williams, who has been a major go-forward force for Ulster this season will undergo surgery to repair a labral tear in his right shoulder. It was hoped that a rehabilitation programme would help him back to fitness for the final run-in, but the Ulster medical staff decided that surgery was the best option for the big Samoan’s future.
Williams’ absence will be a big blow to Director of Rugby Les Kiss, who will also be without Tommy Bowe for Saturday’s must-win clash at the Kingspan Stadium with Guinness Pro12 table toppers Leinster.