Poland’s Iga Swiatek clinched becoming the new World No.1 in women’s tennis on Friday by defeating Swiss player Viktorija Golubic 6-2, 6-0 at the WTA Miami Open.

Swiatek will move into the top spot vacated by Australian Ashleigh Barty after the three-time Grand Slam champion announced her retirement earlier this week. “Pretty surreal,” Swiatek said.