A scary moment unfolded Sunday at the Australian Open when a ball girl collapsed in the middle of a match. The medical emergency brought the match to a screeching halt, after Turkey's Zaynep Sonmez noticed that the ball girl was losing her balance and clearly not looking well.

Jannik Sinner and Aryna Sabalenka will look to defend their titles, as Carlos Alcaraz and Iga Świątek seek their first Career Grand Slams in Melbourne.

Tournament debutant Elsa Jacquemot upsets 20th seed Marta Kostyuk 6-7 (4) 7-6 (4) 7-6 (10-7) in the first Australian Open women's singles match in the Open Era to be decided via three tiebreaks. The Reuters Daily Briefing newsletter provides all the news you need to start your day. Sign up here.

Columbia student Zheng held his nerve in the face of a comeback from his compatriot to win his first Grand Slam main-draw match.

Amanda Anisimova will be eyeing a strong run at the Australian Open after impressing in recent Grand Slams. Anisimova takes on Simona Waltert in the first round of the Australian Open, where she is the fourth seed.

Zeynep Sönmez has stopped a game to help an ailing ballkid during her first-round win over Ekaterina Alexandrova at the Australian Open.

At the Tennis Channel desk yesterday, Danielle Collins was asked to predict an early ATP upset and hesitated, saying, “On the men’s side. It’s tough.

It's Day 1 at the Australian Open, and our reporters are on the ground in Melbourne bringing you all the latest news and results from the year's first Grand Slam.