Former champ Gauff said she was ‘mentally exhausted’ after her error-strewn first-round match against Tomljanovic.

Former US Open champion Coco Gauff has stumbled into the second round of the tennis Grand Slam, squeezing past Australia’s Ajla Tomljanovic in an error-strewn three-hour battle.

Third seed Gauff punched her ticket to the second round on Tuesday, after overcoming a litany of self-inflicted errors to win 6-4, 6-7 (2/7), 7-5 in a match that lasted 2hr 57min.

“It was a tough match. Ajla was tough; she was getting so many balls back,” 2023 winner Gauff said after her win.

“It wasn’t the best but I’m happy to get through to the next round.”