WIMBLEDON, England -- Well-rehearsed in the role of gracious winner, Roger Federer patiently waited for his opponent to tuck his racket into a bag, and they walked off the court side by side and smiling at the crowd's long, loud roar.
When they reached the exit, Ilija Bozoljac allowed Federer to go through the door first, bound for the third round at Wimbledon.
It has been a surprisingly arduous journey so far. After rallying from a two-set deficit in his opening match, Federer endured plenty of tense moments Wednesday before beating Bozoljac 6-3, 6-7 (4), 6-4, 7-6 (5).
"As long as you're moving on, especially at Wimbledon, I'm a happy man," Federer said.
Still stymied in the first round were American John Isner and Nicolas Mahut of France, immersed in the longest match in history.
How long? It was suspended because of darkness -- for the second day in a row. Tied at 59-all in the fifth set, they were to resume Thursday.
"Nothing like this will ever happen again. Ever," Isner said.
By comparison, Federer had only a light workout. But the six-time champion had trouble finishing off Bozoljac, an obscure but flashy Serb who won the crowd's affection. A qualifier ranked 152nd, he hits an unorthodox two-handed forehand but also a booming serve that kept Federer on his heels.
"He played really well," Federer said. "I served well at key moments and I'm very happy with the way I got through. It could have gone five, so I'm happy."
Federer converted only three of his 13 break-point chances. But he was never broken, won 75 percent of his service points and committed just 13 unforced errors.
Three-time Wimbledon runner-up Andy Roddick dug out of an early hole and beat Michael Llodra 4-6, 6-4, 6-1, 7-6 (2). Seeded fifth, Roddick began playing serve and volley more as the match progressed, and he won 34 points at the net.
"That was as tough of a second round as there is," Roddick said. "I had to make an adjustment. Off of my serve, I had to start coming in and serving and volleying behind it."
Playing on Centre Court for the first time since his loss to Federer in last year's epic final, Roddick hit 25 aces, lost serve just once and committed only 11 unforced errors.
No. 3-seeded Novak Djokovic beat American Taylor Dent 7-6 (5), 6-1, 6-4. Dent served at up to 148 mph but lost 25 of 54 points at the net.
No. 15 Lleyton Hewitt, the 2002 champion, advanced when Evgeny Korolev retired trailing 6-4, 6-4, 3-0. American Mardy Fish had 30 aces but went 0-for-9 on break-point chances in the final set and lost to Florian Mayer 6-7 (2), 6-3, 6-4, 6-4.
The only seeded man to lose was No. 7 Nikolay Davydenko, beaten by Daniel Brands 7-6 (5), 7-6 (8), 6-1.
Federer was three points from defeat Monday against Alejandro Falla, and he found himself two points from being forced to a fifth set against Bozoljac. Then Federer swept the final three points of the match, one with a bold drop shot when trailing 5-4 in the tiebreak.
The defending champion said he's unfazed to be tested so severely by lesser players.
"People maybe got a little bit spoiled and thought the early rounds are not even a competition any more," Federer said. "It just shows how deep the men's game is at the moment. People think they're all scared of me. I always think they actually play better matches against me because they have nothing to lose."
While Federer's match evolved into a serving contest, Roddick's match became a battle over control of the net. After he started to charge aggressively, he broke for the first time at love in the final game of the second set to even the score and then won five consecutive games in the third set to take control against Llodra.
"He was playing flawless tennis," Roddick said. "He played an almost perfect first set. It took some of my best stuff today to get through that. I thought I played really well. I think I had to."
Information from The Associated Press was used in this report.