Author: Wayne Coffey, Special to USA TODAY Sports

Serena Williams survives a tough battle for a 6-3, 6-7 (6), 6-3 triumph over No. 22 Maria Sakkari of Greece on Monday at the U.S. Open.

Naomi Osaka dispatched Anett Kontaveit at the U.S. Open on Sunday night, moving on to a quarterfinal showdown with American upstart Shelby Rogers.

The top-ranked Djokovic was defaulted from the tournament after hitting a linesperson with a tennis ball.

The phenomenon known as Cocomania has mostly closed shop for this year’s U.S. Open, though Coco Gauff is still in the doubles competition.