Photos: Meet Serena Williams' Opponent At U.S. Open On Friday Night

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Earlier this week, the sports world saw Serena Williams extend her career with a thrilling US Open win over Annette Kontaveit.

In a packed Arthur Ashe Stadium, Williams was supported by a plethora of A-list celebrities

and athletes including Tiger Woods and other stars.

After the match Kontaveit gave flowers to Serena.

"I thought I didn't play a bad match at all," Kontaveit said. "He definitely raised his level in the third set.

She played wonderfully. She was serving so well in these crucial moments in the first set.

I worked really hard, I thought I played a good match.

She was better today."

Exactly two days later, Williams will return to the court.

He will face Ajla Tomljanovic tonight.

While he is unseeded, Tomjalanovic will cause a lot of problems for Williams.

Earlier this year she produced her best result in a major and reached the quarter-finals of Wimbledon.

The Williams and Tomjalanovic match will begin at 7:00 pm. ET. on ESPN.