Wimbledon, England ? There were moments during Andy Roddick’s third-round match at Wimbledon when he could have allowed himself to get distracted by frustration.

Indeed, there was a time, not all that long ago, when he probably would have.

“You used to see,” said Roddick’s coach, Larry Stefanki, “negativity carry over and linger for a few games.”

Not anymore. The No. 5-seeded American let the second set slip away against No. 29 Philipp Kohlschreiber of Germany, then quickly regrouped Friday, finishing with 28 aces in a 7-5, 6-7 (5), 6-3, 6-3 victory to reach the second week at the All England Club.

“I’ve done a good job of not saying a word out there this whole tournament, just going about my business the right way,” Roddick said, “so I just tried to play the next point.”

Leading 5-4 in the second set, Roddick got to love-40 on Kohlschreiber’s serve. But Roddick frittered away all three of those set points, then lost the last three points of the tiebreaker, too. Did he let that bother him? No, he went out and broke to open the third set.

Then, still nursing that lead late in the third, Roddick badly missed a forehand wide, an unforced error he greeted with a growl. But that was it. Instead of losing his focus, he tightened it, winning 15 of the next 16 points.

After being taken to five sets in the first round, then four in the second, Roger Federer was back to his best Friday, beating 2001 Australian Open runner-up Arnaud Clement 6-2, 6-4, 6-2.

“Obviously,” Federer said, “this felt much better.”

Federer saved the only break point he faced, hit 29 winners and only 12 unforced errors, and was ushered off Centre Court by a roar of approval from the crowd.

“I get standing ovations 99 percent of the time — doesn’t matter if the performance was great or not-so great,” Federer said. “I think they’re happy to see me, and they love tennis. … But of course, when I end up winning, and they give me a reception like this, it feels good at the heart.”

John Isner, meanwhile, was feeling anything but good Friday, when he trudged on court at noon to play in the second round a day after finishing the longest match in tennis history. Understandably wiped out after his victory over Nicolas Mahut went to 70-68 in the fifth set and included 11 hours, 5 minutes of action spread over three days, the 23-seeded Isner, of Tampa, Fla., bowed out 6-0, 6-3, 6-2 to Thiemo de Bakker in 74 minutes — the shortest men’s match at Wimbledon so far this year.

“This is one type of loss that I can’t be too disappointed about, because I didn’t have a good chance to begin with,” said Isner, who was dealing with a “dead” right shoulder, a stiff neck and a painful blister on the little toe on his left foot.