Tiafoe, seeded No. 17, beat Nishioka in three sets; Brooksby and Boyer also won first-round matches.
Players object to the US Open's new Sunday start as the event expands to 15 days and higher pay now.
Sinner defends 2,000 points; Alcaraz, Djokovic and Shelton set to alter the ATP standings at US Open.
Sebastian Korda returns from elbow surgery and a shin stress fracture aiming to reestablish himself.
American men arrive at the US Open with momentum and realistic hopes of ending the title drought...
McEnroe predicts an American will win the 2025 US Open, but he refused to name who. Expect a shock.
Gauff's serve wobbles, Shelton falters and Alcaraz survives as Cincinnati night yields stark tests..
Zverev meets Shelton in Cincinnati quarters; Zverev leads 3-0; Shelton on nine-match streak. Friday 7p
Cincy day notes: heat, ice towels, Gauff's outlook, Paolini's 'ice sausage', Sinner's bagel. Day9AM.
Fritz, Shelton, Tiafoe and Paul will play Delray Beach qualifier for a spot in Davis Cup Final 8....
