Novak Djokovic made a triumphant return to Perth after a decade and led Serbia to a 2-1 win over China at the United Cup.

Frances Tiafoe has used his perfect play in tiebreakers at the U.S. Open to send the semifinals to a fifth set.

Rafael Nadal has gotten is off to a good start in his return from injury, defeating Miomir Kecmanovic in two sets to reach the third round at the Madrid Open.

United States captain Mardy Fish hinted at a lack of passion within his team after the record 32-time champion Americans were eliminated from the Davis Cup Finals by following up a lopsided loss to host Italy with a humbling defeat to Colombia.

Jannik Sinner became the first teenager to win an ATP 500 event, beating Mackie McDonald 7-5, 4-6, 7-5 to take the Citi Open title.