Floundering Daniil Medvedev is expecting as much as a six-figure fine after his shocking behaviour during his first-round defeat at the US Open.
Jannik Sinner started his US Open title defence with a clinical performance as he beat Czech Vit Kopriva 6-1, 6-1, 6-2 in a flawless display at Arthur Ashe Stadium on Tuesday.
Second seed Iga Swiatek's sublime summer continued with a record-breaking opening-round victory at the US Open on Tuesday.
Carlos Alcaraz has explained that he was forced to shave his hair off following a misunderstanding with his brother, but it did not affect the Spaniard as he reached the second round of the US Open.
Two-time Wimbledon champion Petra Kvitova brought the curtain down on her tennis career with an emotional goodbye following a heavy first-round defeat at the US Open.
Victoria Mboko remained upbeat after losing to two-time Grand Slam winner Barbora Krejcikova at the US Open, calling the defeat a "learning opportunity".