Author: Sandra Harwitt, Special to USA TODAY

Into the 21st year of his storied career, Roger Federer remains dedicated to playing tennis and continuing to rewrite tennis history books.

Danielle Collins, a two-time NCAA champion with Virginia, was aiming to become the first collegiate player to reach a major final since 1983.

Rafael Nadal ended Frances Tiafoe’s fabulous run at the Australian Open, beating the American 6-3, 6-4, 6-2to take his place in the semifinals.

Danielle Collins, who played at Virginia, has reached the Australian Open semis after some big upsets.

Serena Williams fights to a 6-1, 4-6, 6-4 fourth-round win against top-ranked Simona Halep at the Australian Open.

Patrick Mouratoglou says Serena Williams is “incredibly loyal,” another reason he didn’t worry about getting fired.

Chasing a record 24th Grand Slam title, Serena Williams would tie the mark held by Australian Margaret Court.

The 16th-seeded Serena Williams, who’salready won 10 majors since turning 30, captured the first set in 18 minutes.