USA's Terrell Gausha knocks down Armenia's Andranik Hakobyan, left, during a middleweight boxing match at the London Games on Saturday. (Patrick Semansky/AP)

While Joseph Diaz Jr. dominated from the first punch of the Olympic boxing tournament, teammate Terrell Gausha waited until the final seconds for an incredible stoppage victory.

Although the Americans went about it in dramatically different ways, they got the games off to a rousing start for a former amateur boxing power looking to get back on top.

Diaz looked sharp in a 19-9 victory over Ukraine bantamweight Pavlo Ishchenko in the tournament’s opening bout Saturday, while Gausha knocked down Armenian middleweight Andranik Hakobyan twice in the final 7 seconds of his middleweight bout, winning by stoppage with no time on the clock.

“However you have to get it done, we’re going to do it,” Gausha said. “I knew I had to leave it all in the ring.”

Diaz relied on his scouting and ample talent to blast Ishchenko, repeatedly catching his opponent in the later minutes with those unblocked, head-moving punches that consistently count for points in amateur boxing. Diaz repeatedly snapped back Ishchenko’s head with uppercuts and quick strikes during a dominant third round, delighting the 19-year-old’s father and family in the stands.

USA’s Joseph Diaz Jr., right, scored a 19-9 victory over Pavlo Ishchenko, left, of the Ukraine to advance in bantamweight men's boxing competition at the London Games on Saturday. (Toni L. Sandys/THE WASHINGTON POST)

Diaz earned a second-round bout Wednesday with Cuba’s Lazaro Alvarez, the tournament’s top-seeded boxer — but he also captured the attention of promoters, managers and an entire bantamweight division that’s probably grateful Diaz and Alvarez must fight each other early.

“I had a really tough draw, and I know the Cuban is the No. 1 seed, but I’m confident,” Diaz said. “I think I’m giving the whole Team USA a boost.”

— Associated Press

Cold night at the beach

When temperatures dropped into the low 60s for the first night session at Horse Guards Parade, the Olympic beach volleyball players said bye-bye to their bikinis.

Two-time defending gold medalists Kerri Walsh and Misty May-Treanor of the United States wore long-sleeved shirts on top of bikini bottoms for their victory over Australians Natalie Cook and Tasmin Hinchley, a match that started at 11 p.m. when the temperature was 63 degrees.

The Americans won 21-18, 21-19, rallying from a four-point deficit in the second set to win on May-Treanor’s spike that ended a lengthy set point. Walsh and May-Treanor have never lost a set in three Olympics.

— Associated Press

Solo bashes Chastain

U.S. goalkeeper Hope Solo had very little to do during the American women’s soccer team’s 3-0 victory over Colombia in Glasgow on Saturday. So she decided to stir things up afterward by using Twitter to call out former U.S. star Brandi Chastain, now a commentator for NBC.

“Lay off commentating about defending and [goalkeeping] until you get more educated @brandichastain,” Solo wrote. “[T]he game has changed from a decade ago.”

Chastain, apparently, had some issues with the Americans’ defensive performance against Colombia despite the fact Solo was scarcely tested. She was particularly critical of back Rachel Buehler.

“I feel bad 4 our fans that have 2 push mute,” Solo wrote in a subsequent tweet, “especially because @arolowhite [Chastain’s broadcast partner] is fantastic. @brandichastain should be helping 2 grow the sport.”

And, with that, the U.S. has an unexpected issue with which to deal before its final group game Tuesday against North Korea in Manchester.

— Barry Svrluga

Judo gold

Sarah Menezes of Brazil and Arsen Galstyan of Russia won the first two golds in the judo competition. The second-ranked Menezes beat defending Olympic champion Alina Dumitru of Romania in the women’s 48-kilogram final. Galstyan defeated one of the 60-kg favorites, Hiroaki Hiroaka of Japan, for his first Olympic medal.

— Associated Press