@DALOpenTennis @TennisTV #isner’s ace production in 3rd set is down! So far only 2, while he has 32 in the previous 2 sets. 👀 looks like he is tired.
@DALOpenTennis @TennisTV #isner’s ace production in 3rd set is down! So far only 2, while he has 32 in the previous 2 se...
