LONDON—Seven-time champion Serena Williams advanced to the Wimbledon semi-finals with a 3-6, 6-3, 6-4 victory over Camila Giorgi of Italy today.
Williams dropped her first set at this tournament as the 52nd-ranked Giorgi produced an impressive display of power and accuracy in the opener.
But Williams lifted her intensity to level the match before closing it out to move a step closer to reclaiming the title she last won in 2016.
The 36-year-old Williams was absent from the All England Club in 2017 due to her pregnancy, and played her first Grand Slam since giving birth at the French Open last month when she reached fourth round.
Williams, who hasn't faced a player ranked inside the top 40 en route to the last four, next will face either 13th-seeded Julia Goerges of Germany or 20th-seeded Kiki Bertens of the Netherlands.
Meanwhile, Angelique Kerber reached her third Wimbledon semi-final after converting her seventh match point to beat Daria Kasatkina 6-3, 7-5 earlier today, setting up a meeting with former French Open champion Jelena Ostapenko.
Ostapenko became the first Latvian woman to make the final four at the All England Club with a 7-5, 6-4 victory over Dominika Cibulkova on a windy No. 1 Court.
Kerber, the former No. 1 and two-time major champion who was the runner-up at Wimbledon two years ago, took advantage of Kasatkina's erratic serving and many errors to return to the final four.
Ostapenko was more efficient, serving her match out at love and converting her first match point with her 14th backhand winner.
On the men's side, Juan Martin del Potro became the last man into the quarter-finals by beating Gilles Simon 7-6 (1), 7-6 (5), 5-7, 7-6 (5).
The fifth-seeded del Potro failed to convert four match points when serving at 5-4 in the fourth set, but maintained his composure to close out the contest with his first opportunity in the tie-breaker that followed.
It was the only fourth-round contest to be carried over to today and lasted four hours, 24 minutes, making it the longest men's singles match of the tournament.
Del Potro will face two-time champion Rafael Nadal in the quarter-finals tomorrow.