U.S. Open fines: Aryna Sabalenka's $7.5K racket smash and a rare first-round rule violation

- U.S. Open: 136 events in the last 90 days
What happened
Sabalenka's racket smash was seen around the world, but the first round of qualifying brought the largest fine of the U.S. Open.
Summary assembled by rule from the sources below