At 6-6 in the third set, a decisive tiebreak to ten points follows. In it, Tan used her second game point after a miss by Williams, who was allowed to serve before the game at 5-4 in games. Williams also led 4-2 in the decisive tiebreak.
The duel lasted no less than 3 hours and 10 minutes and did not end until around 10:40 PM UK time. After the first set, the roof on Center Court was closed.
Williams received a wildcard from the Wimbledon organization two weeks ago. The seven-time champion in London gave up in the first round of Wimbledon last year and has not played in singles since. In the run-up to her comeback, she already doubled in Eastbourne.
Williams, who is now 40 years old, is number 1204 in the world rankings.