Frances Tiafoe was given a warning for unsportsmanlike ... before his frustration boiled over. He sent a forehand too long as Marozsan held onto his serve, having broken Tiafoe the previous ...

Frances Tiafoe of the U.S. plays a forehand return to Fabian Marozsan of Hungary during their second round match at the Australian Open tennis championship in Melbourne, Australia. Jannik Sinner ...

Linette seen returning the ball to Uchijima. US player Frances Tiafoe of the plays a forehand against Arthur Rinderknech of France in the Men's Singles First Round during day two. Fellow American ...

(AP Photo/Vincent Thian) Frances Tiafoe of the U.S. plays a forehand return to Arthur Rinderknech of France during their first round match at the Australian Open tennis championship in Melbourne, ...

There are three American men aged 23 and under in the second week of a Grand Slam. That hasn't happened since 2003 ...

Frances Tiafoe of the U.S. celebrates after defeating ... Novak Djokovic of Serbia plays a forehand return to Nishesh Basavareddy of the U.S. during their first round match at the Australian ...

Two years ago, a 20-year-old Ben Shelton became the youngest American man to reach the semifinals of the US Open since Michael Chang in 1992. Today, the big-serving lefty has become the youngest ...

“I remember my whole friend group, we were like, ‘Oh, my God, it’s Learner.’ He was always way better,” said Michelsen, who ...

Jannik Sinner has started his Australian Open title defense with a challenging win over No. 35-ranked Nicolas Jarry.

There are six American men and five American women in the third round. Tommy Paul, Coco Gauff and Jessica Pegula all play Thursday. No. 17 Frances Tiafoe, a two-time U.S. Open semifinalist, was upset ...