BEIJING — James Blake could shrug off the three match points he failed to convert, and even the misfire on an easy forehand that would have given him a berth in the Olympic final.

What stuck in his craw was the notion his opponent didn’t play fair.

Blake came up one shot short today, losing in the semifinal to Fernando Gonzalez of Chile 4-6, 7-5, 11-9. Afterward he accused Gonzalez of failing to fess up on a disputed point two games before the finish.

“I’ve spoken all week about how much I’ve enjoyed the Olympic experience, how much I love the spirit of it,” Blake said. “That’s a disappointing way to exit the tournament, when you not only lose the match, but you lose a little faith in your fellow competitor.”

Actually, the No. 8-seeded Blake remains in the tournament. A first-time Olympian at 28, he’ll play for a bronze Saturday as the last hope for a U.S. medal in men’s or women’s singles.

Gonzalez, seeded 12th, will play in Sunday’s final against the winner of the later match between Rafael Nadal and Novak Djokovic.

The incident that upset Blake occurred with Gonzalez serving at 8-9 in the final set. On the first point, Blake hit a backhand passing shot long but contended the ball ticked Gonzalez’s racket before landing, as TV replays confirmed.

Blake appealed in vain to the chair umpire, and said Gonzalez should have conceded the point. Blake went on to lose the game to make it 9-all.

“Playing in the Olympics, in what’s supposed to be considered a gentleman’s sport, that’s a time to call it on yourself,” Blake said. “Fernando looked me square in the eye and didn’t call it.”

Gonzalez said he was uncertain whether the ball hit his racket.

“I didn’t feel anything,” Gonzalez said. “I mean, it’s just one point. There is an umpire. If I’m 100 percent sure about it, I mean, I will give it. But I’m not sure.”

Blake described Gonzalez as a great player who does everything in his power to win, “usually” within the rules.

“Whatever he wants to say is fine,” Blake said. “Whatever is going to get him to have some sleep tonight, then that’s fine.”

New No. 1 Jelena Jankovic lost in the women’s quarterfinals to No. 6 Dinara Safina of Russia, 6-2, 5-7, 6-3. Safina won her 14th match in a row and will play Li Na of China in the semifinals Saturday.

The other women’s semifinal will be an all-Russian matchup between No. 5 Elena Dementieva and No. 9 Vera Zvonareva.

Roger Federer, eliminated in singles Thursday by Blake, kept alive a bid for the first medal of his career by winning a rain-interrupted doubles match with Swiss partner Stanislas Wawrinka. They advanced to a semifinal match later Friday against top-seeded Mike and Bob Bryan of the United States by beating Mahesh Bhupathi and Leander Paes of India 6-2, 6-4.

Venus and Serena Williams, also eliminated in singles Thursday, completed a suspended second-round doubles match and beat Ayumi Morita and Ai Sugiyama of Japan, 7-5, 6-2.

The two doubles matches were suspended at 1:15 a.m. because of rain and resumed 15 hours later.

Americans Lindsay Davenport and Liezel Huber lost in the quarterfinals to Anabel Medina Garriguez and Virginia Ruano Pascual of Spain 5-7, 7-6 (6), 8-6.

Blake and Gonzalez played the first match on center court, and there was tension between them as early as the second set, when Gonzalez slammed an easy forehand at his opponent’s head from point-blank range.

Blake glared at Gonzalez, who apologized. Afterward Blake said he was upset only in the “heat of the moment.”

As for the later point of dispute, the match wouldn’t have reached that stage had Blake converted one of his three match points after Gonzalez fell behind 5-6, love-40 serving in the final set.

At 10-9 it was Gonzalez who struggled to convert match points, but on the fifth one he smacked a service winner for the victory.

“It was really one or two points, and who played those one or two points better,” Blake said. “Today he did at the end.”

After beating Federer, Blake showed no sign of an upset hangover. He served well, winning 15 consecutive service points at one stretch, and repeatedly negated the big-swinging Chilean’s forehand by pinning him deep in baseline rallies.

Blake even pulled off a nifty trick shot, retreating to retrieve a lob and hitting a back-to-the-net, between-the-legs forehand. Gonzalez was so startled he dumped an easy forehand into the net.

Three times in the second set, Blake was two points from victory. But the best opportunity came in the third set, when he went for a winner on his first match point and sailed a forehand long.

Gonzalez then hit four winners in a row to hold for 6-all, and eight games later he was thrusting his arms to sky after clinching a medal.

Four years ago in Athens, Gonzalez and Nicolas Massu won the doubles for Chile’s first gold medal in any sport. Gonzalez also won a bronze in singles in 2004, and he’s guaranteed at least a silver Sunday.

“I’m happy because the worst thing that can happen is I’m going to have all the medals,” he said.