LONDON — American Jack Sock and Canadian Vasek Pospisil could have trouble improving on their first tournament as a doubles team.

Sock and Pospisil defeated Americans Bob and Mike Bryan 7-6 (5), 6-7 (3), 6-4, 3-6, 7-5 in the Wimbledon doubles final on Saturday playing in their first event as a team.

The winners broke the top-seeded Bryan brothers’ service in the final game on their fifth match point, with Sock smashing the winning forehand on a Mike Bryan second serve.

Pospisil said they had a simple formula for beating the all-time best doubles pair in Grand Slam history.

“Close your eyes; hope you play the best tennis of your life,” he said, smiling.

Sock and Pospisil were playing on Centre Court for the first time.

“We had a lot of fun; people could see that,” Sock said. “That’s part of why we did well. We really enjoyed being out there. As kids we grew up watching this tournament. This is what we kind of dreamed of doing.”

The 21-year-old Sock became the third-youngest player to win both a Grand Slam men’s doubles title and a Grand Slam mixed doubles championship in the Open era, adding to the mixed title he won with American Melanie Oudin at the U.S. Open in 2011.

Todd Woodbridge and John McEnroe, both 20, were the only men to win both titles at a younger age, with McEnroe being the youngest.

The 36-year-old Bryan brothers’ Grand Slam championship slump continued.

The Americans, who have won a record 15 Grand Slam doubles titles, including three at Wimbledon, had not reached the final at any of the last three Grand Slam tournaments — after winning four major titles in a row before that.

“Unfortunately we were on the losing end of it, which doesn’t feel good,” Bob Bryan said. “But we’ll look back on this run we had here with good feelings. I thought we fought hard for two weeks and turned it into a final ... almost another trophy.”

He said he wasn’t surprised by their opponents’ quick success as a team.

“That happens a lot — the honeymoon period is sometimes tough to stop,” he said. “We faced it many times. Guys playing together the first time are really excited. They have great runs.”

It was the first Wimbledon men’s doubles final to feature four players from North America since 1983 when Peter Fleming and McEnroe defeated fellow Americans Tim and Tom Gullikson.

Women’s doubles

E rrani, Vinci complete doubles career Grand Slam: Italy’s Sara Errani and Roberta Vinci became the fifth duo to complete a career Grand Slam in women’s doubles together, winning Wimbledon for the first time Saturday.

The second-seeded Errani and Vinci beat 14th-seeded Timea Babos of Hungary and Kristina Mladenovic of France 6-1, 6-3 in the final.

“I honestly can’t grasp the fact that we’ve been able to accomplish all of this,” Vinci said.

It’s the fifth major championship for Errani and Vinci, with at least one at each Grand Slam tournament. The first came at the French Open in 2012, followed by the U.S. Open later that year, and the Australian Open in 2013 and 2014.

Asked to compare this trophy to their previous four, Errani replied: “It’s different because it’s the (career) Grand Slam. I thought about it all day. Even on court, during the match, I thought about it. It’s something historic.”

According to the WTA, the four other partnerships with career Slams in women’s doubles are Serena and Venus Williams; Martina Navratilova and Pam Shriver; Gigi Fernandez and Natasha Zvereva; and Kathy Jordan and Anne Smith.

She and Vinci fell to the ground and hugged after winning under the closed roof at Centre Court. Later, they completed each other’s sentences while answering questions in Italian from reporters.

“I don’t think I ever was as tense as I was today. Not even singles,” said Errani, the 2012 French Open runner-up. “I was thinking about the Grand Slam. It’s crazy.”

They were playing in their eighth major final, and Errani said their friendship off the court made them better competitors on it.

Babos and Mladenovic were making their debut as a team in a Grand Slam tournament. They had six double-faults and were broken five times.

Mladenovic won last year’s mixed doubles title with Canada’s Daniel Nestor; Babos won the 2010 Wimbledon girls’ doubles title.