"I never thought that I would get to 100," Williams said after the match, reflecting on the two decades she's spent playing at Flushing Meadows. "It's so special. I never want to let it go."
The 37-year-old American was dominant from the start, firing off 25 winners, compared to zero from 18th-seed Wang, and winning 90% of her first serve points.
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During her fourth-round match on Sunday, Williams slipped and fell while running to the net and twisted her right ankle but said on Tuesday she was feeling "great".
Williams faces fifth-seed Elina Svitolina in the semi-finals.
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