LONDON — As a youngster, Garbine Muguruza sat in awe in front of the TV as the Williams sisters accumulated Grand Slam titles. They were her role models.

Now Muguruza is an emerging tennis star in her own right, and as of Saturday the only woman who can boast of beating each Williams in a major final.

Muguruza powered her way to her first Wimbledon championship by playing fearlessly and dominating down the stretch, putting together a 7-5, 6-0 victory over a fading Venus Williams by claiming the final’s last nine games.

“It’s great to go out there and play somebody that you admire,” Muguruza said. “I knew she was going to make me suffer and fight for it.”

It was Williams’ 16th Grand Slam final and ninth at the All England Club. At 37, she was bidding for her sixth title at the grass-court major, 17 years after her first. And she was close to gaining the upper hand against Muguruza, holding two set points at 5-4 in the opener. But Muguruza fought those off and never looked back.

“She competed really well,” Williams said. “She just dug in there.”

For Muguruza, this final was her third at a major.

In her first, at Wimbledon in 2015, she lost to Williams’ younger sister, Serena. But in her second, at the French Open last year, Muguruza again faced Serena — and won. That was the most recent final Muguruza had played in at any tournament until Saturday, an indication of the sort of up-and-down 12 months she’s had.

But with stand-in coach Conchita Martinez pushing her to play each point on its own merits — don’t look back, don’t think ahead — Muguruza was able to regain her best form these two weeks.

Especially in crunch time.

It ended when Williams hit a shot that landed long, but was ruled in. Muguruza challenged the call, and after a bit of a delay, the review showed the ball was, indeed, out. Made to wait to celebrate, Muguruza eventually dropped to her knees and covered her crying eyes.