Novak Djokovic improved to 19-0 in the first round of the U.S. Open, battling through some leg troubles to beat Learner Tien 6-1, 7-6 (3), 6-2 on Sunday night.

Novak Djokovic’s first match at the US Open was a bit of a litmus test for the Serbian legend because he didn’t play a hardcourt warm-up tournament coming into the year’s final Grand Slam. The 24-time Grand Slam champion said he didn’t play the Cincinnati Open because he prefers to focus on the Grand Slams at this stage of his career.

After 89 unforced errors, including 14 double-faults, the sixth-seeded American was gone from Flushing Meadows with a loss to 82nd-ranked Renata Zarazua.

Australian Open champion Madison Keys has been undone by 89 unforced errors during a 6-7 (10), 7-6 (3), 7-5 loss to Mexico’s Renata Zarazua in the first round of the U.S. Open

Daniil Medvedev had a meltdown on the court at Louis Armstrong Stadium Sunday night at the U.S. Open in his loss against Benjamin Bonzi.

Daniil Medvedev's comeback attempt comes up short as Benjamin Bonzi prevails for a first-round victory at the US Open.

Venus Williams has started her first Grand Slam match in two years at the U.S. Open. Williams is facing 2023 French Open runner-up Karolina Muchova in Arthur Ashe Stadium on Monday night.

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Carlos Alcaraz opens his bid for a sixth Grand Slam title at the US Open on Monday as Venus Williams prepares to make a record-extending 25th appearance at the tennis