Five things to know about Tuesday, Day 4 of the London Olympics:

— Swimmer Phelps collects two more medals to break record.

— Raisman lifts U.S. women to gymnastics gold.

— U.S. men roll to 110-63 win over Tunisia in hoops.

— Female Saudi judoka cleared to fight.

— IOC, FINA defend China’s teen swimmer.

Michael Phelps’ first gold medal of the London Olympics was one special prize.

The American swimming star broke the Olympic medals record as the United States romped to a dominating win in 4×200-meter freestyle relay.

With 19 career medals spanning three Olympics, Phelps moved one ahead of Soviet gymnast Larisa Latynina, who got her haul in 1956, 1960 and 1964. He helped the relay team to the victory after settling for silver when he glided at the end of the 200 butterfly earlier Tuesday.

The United States team of Ryan Lochte, Conor Dwyer, Ricky Berens and Phelps on the anchor leg won in 6 minutes, 59.70 seconds. France took the silver in 7:02.77, while China was third in 7:06.30.

Phelps now has 15 golds, two silvers and two bronzes. He still has three more events in London before he retires.

“It has been a pretty amazing career,” the 27-year-old Phelps said, “but we still have a couple races to go.”

South Africa’s Chad le Clos edged Phelps in the 200 fly, and American Allison Schmitt won the women’s 200 freestyle.

The U.S. women’s gymnastics team also had a big day. Jordyn Wieber kicked it off with a tremendous vault and Aly Raisman closed it out with a solid floor exercise.

Team USA routed silver medalist Russia and everybody else on its way to its first Olympic title in women’s gymnastics since 1996. The U.S. score of 183.596 made its final event more like a coronation.

When the floor score for Raisman flashed, the Americans screamed and a chant of “U-S-A! U-S-A!” rang out around the arena. The women held up their index fingers for the cameras — just in case anyone had a doubt.

“We knew we could do it. We just had to pull out all the stops,” Raisman said.

Wieber went first and did perhaps the best one she’s ever done, getting great height in the air, her legs locked together. When her feet slammed into the mat on landing, she threw up her arms and smiled broadly. Anyone wondering how she was coping with the devastation of missing out on the allaround competition had their answer.

The U.S. men’s basketball team got off to a slow start against Tunisia, then took off when coach Mike Krzyzewski went to his reserves.

Carmelo Anthony and Kevin Love scored 16 points apiece to lead Team USA to a 110-63 victory. Kevin Durant added 13 and Anthony Davis had 12 for the Americans, who will face Nigeria on Thursday night.

Anthony, Love, Deron Williams, Russell Westbrook and Andre Iguodala opened the third quarter with a 21-3 run, turning a surprisingly close 13-point lead into a 67-36 bulge before any of the more celebrated starters finally got to play in the second half.

Also Tuesday, a female judo fighter from Saudi Arabia was cleared to wear a form of headscarf in the Olympics after a compromise was reached that respects the “cultural sensitivity” of the Muslim kingdom.

Judo officials had said they would not let Wojdan Ali Seraj Abdulrahim Shahrkhani compete in a headscarf because it was against the principles of the sport and raised safety concerns. But an agreement was reached after several days of IOC-brokered talks between the International Judo Federation and the Saudi Olympic Committee, allowing her to compete Friday in the heavyweight division.

“They have a solution that works for both parties, all parties involved,” International Olympic Committee spokesman Mark Adams said. “The athlete will compete.”

Saudi Arabia, which had never sent female athletes to the Olympics before, brought its two first female Olympians to London on condition they adhere to the kingdom’s Islamic traditions, including wearing a headscarf.

Olympic officials defended Chinese teen swimmer Ye Shiwen against whispers of doping after she won the 400- meter individual medley Saturday in world-record time — and she made her own statement by winning another gold medal in the 200 IM on Tuesday night.

The 16-year-old clocked 2:07.57 to shave 0.18 off her own mark set in Monday’s semifinal — good enough for an Olympic record and her second gold medal in London.

Ye had closed the 400 with a lap of 28.93 seconds — faster than the 29.10 Lochte posted in the last 50 of the men’s race. Ye’s time was 4:28.43, more than a second faster than the previous world record set by Australia’s Stephanie Rice at the 2008 Beijing Games in a nowbanned bodysuit.

The rest of the Olympic action Tuesday:

Equestrian

Zara Phillips gave the royal family plenty to cheer about, helping team Britain to a second place equestrian finish behind Germany. Princes William and Harry and William’s wife, Kate, were in the stands to watch their cousin as she competed in the show jumping final portion of Olympic eventing.

Phillips’ mother, Princess Anne, watched as well — then presented her daughter and the rest of the winners with their medals at the ceremony before horses and riders took a thunderous group victory lap around the Greenwich Park stadium.

Beach volleyball

Americans Todd Rogers and Phil Dalhausser rallied for a 19-21, 21-16, 15-13 victory against Spain and remain unbeaten in the preliminary round of the beach volleyball tournament.

Defending world champions and top-seeded Emanuel and Alison of Brazil also won, beating Switzerland.

On the women’s side, Americans April Ross and Jennifer Kessy needed three sets to beat the Netherlands 21-15, 21- 12, 15-8.

Soccer

The United States clinched first place in its group in women’s soccer with a 1-0 win over North Korea.

Abby Wambach scored in the 25th minute for her 141st international goal and third of the tournament. Wambach and Co. then celebrated by coercing goaltender Hope Solo to get on the ground and do “the worm.”

Nearly 30,000 attended the first women’s soccer game played in 23 years at Old Trafford, the home of Manchester United.