LONDON (AP) -- Rau'shee Warren has stuck around amateur boxing for over a decade, determined to hang a gold medal around the neck of his mother, Paulette. He made the last two U.S. Olympic boxing teams, but lost his first fight each time.
After two crushing disappointments and all those years in between, Warren is tired of waiting. Although he wants that gold medal, he can't chase it without his first Olympic win.
The American team just needs any win at all to stop its latest Olympic slide.
"I've been waiting for this for a long time, and I know what I have to do," Warren said. "I'm ready to do whatever is necessary to get that gold medal."
Warren officially becomes the first American to fight in three Olympics on Friday night when he takes on France's Nordine Oubaali. Welterweight Errol Spence also is in action against India's Krishan Vikas - and if both Americans lose, the U.S. men's team is completely out of the Olympics.
"He is very quick, but he is beatable," Oubaali said of Warren after winning his opening-round bout Monday. "I know I am capable of beating him."
Both Americans came close to victory, but couldn't solve their opponents or the computerized scoring rules that have baffled most U.S. fighters in the last two decades. Ramirez started slowly and never caught up in a 15-11 loss to Uzbekistan's Fazliddin Gaibnazarov, while Gausha was locked in a tight one with Beijing bronze medalist Vijender Singh of India before dropping a 16-15 decision.
The Americans had their worst Olympic performance ever in Beijing, winning just one bronze medal. The London team could get a medal boost from three promising fighters in the first women's tournament starting Sunday, but the men are headed to another sparse medal count for a nation that has won just one gold in the last three Olympics.
"It's sad, because we came up short," Ramirez said. "It's such a young team, such a hungry team. We really wanted to do better."
Unbeaten runs for the British and Irish teams also ended on a day that began with the return of Vasyl Lomachenko. The Ukrainian dynamo opened his second Olympics in the same dominant style that made him the best boxer in Beijing, overwhelming Dominican lightweight Wellington Arias in a 15-3 victory.
Ramirez nearly beat Lomachenko at the world championships last year, but the Fresno State business major from Avenal, Calif., couldn't figure out how to score points against the smaller Gaibnazarov. The Uzbek opened with a furious work rate to take an early lead before clutching and grabbing his way through the final round, protecting his advantage through inaction.
Ramirez lamented his slow start and didn't heavily criticize the judging.
"I guess my patience wasn't so positive this time," Ramirez said. "I'm just glad I had this experience. I brought a lot of hope and a lot of light back to my town."
Gausha wasn't intimidated by Singh, the Beijing bronze medalist who enjoys rock-star status back home in India - and at ExCel, where hundreds of Indian fans cheered every time he threw a punch. Both fighters traded shots throughout the bout, but Singh hung on to a one-point lead from the first round when the judges scored each of the final two rounds evenly.
"I gave it everything, and I thought I was doing good in the fight," said Gausha, who is from Cleveland. "It's nothing to hold my head down about. I've still got to respect the judges' decisions. I know it was a close fight."
Earlier, Britain's Anthony Ogogo pulled out an unlikely victory over world champion middleweight Ievgen Khytrov of Ukraine, the top-seeded fighter in the Olympic tournament. Ukraine filed a protest after Ogogo won a close fight on the judges' second tiebreaker, a rare occurrence in amateur boxing, but it was swiftly rejected.
Although Prince Philip, Prince Edward and wife Sophie attended the afternoon session to cheer on Ogogo, Lomachenko was the star. The 24-year-old with sublime hand speed and devastating power was the king of the Beijing ring four years ago, winning featherweight gold and collecting the Val Barker Trophy as the games' best boxer.
Lomachenko waited roughly 50 seconds in London to throw a real punch - but when he did, it was a vicious uppercut that slipped through Arias' raised defense and snapped his neck back before the Dominican even knew it was coming. Lomachenko warmed up after that, firing speedy strikes and fluid combinations that resulted in standing-eight counts for the overwhelmed Arias in each of the first two rounds.
"I lost against the best," Arias said through a translator. "He gave me good shots because I didn't move much. It was an experience I'll never forget."
Ogogo delighted another raucous home crowd with a gutsy performance against Khytrov, who entered the ring wearing a military beret.
The final score was 18-18, sending the decision to the tiebreaker in which every punch scored by all five ringside judges is totaled - but that total finished 52-52. The second tiebreaker is a simple vote for the winner by the five judges, and Ogogo crumpled to his knees after learning he had won. AIBA released the full scoring sheets after the bout, but only said "a majority" of the five judges had voted for Ogogo on the second tiebreak.
Although Ukraine protested the result, Khytrov said he had no problem with the decision, praising Ogogo as a tremendous fighter.
"I am not angry," he said. "Anthony is good. I say good luck to him."