Watch Serena Williams Vs. Agnieszka Radwanska Australian Open Semifinal Online (Live Stream)

Serena Williams will try to move one step closer toward Grand Slam No. 22 on Wednesday night when she faces the fourth-seeded Agnieszka Radwanska in an Australian Open women’s semifinal.

Williams appears back on top of her game after a disappointing end to the 2015 season at the U.S. Open. The 21-time major champion has yet to lose a set at this year’s Australian Open, and she is coming off a dominant win over fifth-seeded Maria Sharapova (6-4, 6-1). Radwanska is the clear underdog, but she enters the semifinal fresh off a 6-1, 6-3 win over 10th-seeded Carla Suarez Navarro.

Will Williams’ hopes for a seventh Australian Open championship remain alive, or will Radwanska shock the tennis world? You can watch it all unfold online here:

When: Wednesday, Jan. 27, 9:30 p.m. ET
Watch: Watch ESPN

Thumbnail photo via Twitter/@SInow