On 11 July 2015, Serena Williams defeated Garbiñe Muguruza in the Wimbledon final to secure her 21st career Grand Slam singles title. The 6–4, 6–4 victory completed her second ‘Serena Slam’, holding all four major trophies at once for the first time since she herself achieved the feat in 2003.
A fightback from 4–2 down
Muguruza, the first Spanish finalist here since 1996, brought heavy groundstrokes and a bold early charge. She broke Williams and held firm to lead 4–2 in the opening set, forcing the Centre Court crowd to contemplate a genuine upset.
Williams found another gear in the next game. She reeled off four straight points to break back, then unleashed serves clocked at 122 and 123 miles per hour to regain control. The set was hers, 6–4.
A second-set surge and late nerves
The American carried that momentum into the second set, racing to a 5–1 lead that seemed to put the title beyond reach. Muguruza refused to fade, clawing back two games and pushing Williams deep into the corners with clean, flat hitting.
At 5–3, Williams steadied herself behind her delivery once more. She closed the contest after 1 hour and 23 minutes with a final hold, having struck 12 aces across the match. Muguruza wept in her chair, but Williams crossed to embrace her at the net.
Beyond a single afternoon
The triumph marked Williams' sixth Wimbledon singles crown and made her, at 33 years and 289 days, the oldest Open-era Grand Slam singles champion. Her path to the final had already cut through four former or future world No. 1 players — Venus Williams, Victoria Azarenka, Maria Sharapova, and Muguruza.
"I honestly wouldn't have thought last year after winning the U.S. Open I would win the Serena Slam at all," she told reporters afterwards. "It's super exciting."
Twelve months earlier, Williams had exited Wimbledon in the third round. Now she stood at the summit again, a calendar Grand Slam suddenly within reach for the first time in her career.
