Serena Williams and Maria Sakkari practised together at the US open

Serena Williams has decided to end her glorious career, and she still wants to give her 120% at the US Open, where it all started for her in 1999. Serena hit Arthur Ashe Stadium on Tuesday, practising with Maria Sakkari and working on her game ahead of the first-round clash.

Sakkari arrives in New York as world No. 3 with high hopes despite posting a 1-3 record during the US Open Series swing. Sakkari lost her Cincinnati opener last week to qualifier Caroline Garcia, who went on to capture her 10th career title in the Queen City. Still, recent losses haven’t diminished the Greek’s passion for play. Sakkari practiced with Serena Williams in Cincinnati last week and has been hitting on the US Open courts this week.

“Going into the tournament, I always feel like—and I always believe—that I can win it,” Indian Wells finalist Sakkari told Tennis Now. “That’s my goal. I’m number three in the world for a reason. I believe that I am one of the best players in the world and one of the favorites for the tournament.”