Description: Sam Querrey, making his first round-of-16 here at the Open and playing for the first time on Arthur Ashe Stadium against a player who had lost just once in the last 6 months, proved to himself and the pro-American crowd that he belongs out on court with a player of Nadal’s stature. “It's nice to know he actually had to go out there and fight for it rather than me kind of handing it to him,’’ Querrey said after the match.