In Photos: Day 3 at the U.S. Open tennis championship
Marin Cilic, of Croatia, lunges to return a shot by Evgeny DonskoyCharles Krupa/The Associated Press
Milos Raonic of Canada serves against Fernando VerdascoStreeter Lecka/Getty Images
Mardy Fish serves against Feliciano LopezFrank Franklin II/The Associated Press
Defending champion Marin Cilic is shown against the backdrop of the USTA Billie Jean King National Tennis CenterJewel Samad/AFP / Getty Images
Ballboy Ryan McIntosh, who was injured by a landmine while serving in Afghanistan, works the match between Jeremy Chardy and Martin KlizanTIMOTHY A. CLARY/AFP / Getty Images
Jeremy Chardy of France hits shot against Martin KlizanTIMOTHY A. CLARY/AFP / Getty Images
Madison Keys of the United States serves against Tereza SmitkovaCharles Krupa/The Associated Press
Madison Keys of the United States falls while playing Tereza SmitkovaJEWEL SAMAD/AFP / Getty Images
Milos Raonic returns a shot to Fernando VerdascoAnthony Gruppuso
Madison Brengle serves against Anna TatishviliMatt Rourke/The Associated Press
A ball person holds onto balls during playAdam Hunger
Fernando Verdasco serves to Milos RaonicMIKE SEGAR/Reuters
Jeremy Chardy returns a shot to Martin KlizanJerry Lai