Defending champions Madison Keys and Jannik Sinner are both safely through to the Australian Open second round, but it was the Italian who enjoyed a far more comfortable opening match at this year's tournament.
While American Keys recovered from a nightmare start on her way to victory over Oleksandra Oliynykova, Sinner powered to a two-set advantage before opponent Hugo Gaston suddenly retired in tears on his chair due to illness.
Keys secured her first Grand Slam crown when she defeated world No 1 Aryna Sabalenka in last year's final but began her title defence in nervy fashion.
Oliynykova, making her Grand Slam main draw debut
Continue Reading on The National UAE
This preview shows approximately 15% of the article. Read the full story on the publisher's website to support quality journalism.