NEW YORK—Martin Damm is tall. NBA tall. Players of his size typically have a jackhammer serve, and he’s lefty to boot. The 21-year-old American piles up aces with nasty angles short in the box, or firing missiles down the center line. It’s the type of serve that forces opponents to make serious adjustments in order to return with any measure of consistency.
Frances Tiafoe managed to crack the code in their encounter Wednesday afternoon on the Grandstand. It was a struggle, but by mixing court positioning, shortening his strokes and taking care of his own serve, the veteran managed just enough pressure on his return games to scratch out three breaks and take the match in four sets.