sentences:  That year, only clubs that were members of the United States National Lawn Tennis Association (USNLTA) were permitted to enter.Richard Sears won the men's singles at this tournament, which was the first of his seven consecutive singles titles.From 1884 through 1911, the tournament used a challenge system whereby the defending champion automatically qualified for the next year's final, where he would play the winner of the all-comers tournament.