"I would say I know David fairly well," Rosenfels said today the Timex Performance Center. "I obviously spent a year with him. I played a lot of golf with him in the off season, those types of things. He and I always got along really well."

That friendship could be tested this month. The Giants announced today they have re-signed Carr. They will compete to be the team's backup behind Eli Manning. Carr held the position in 2008 and 2009 before spending last season with the San Francisco 49ers. Rosenfels filled that slot last year and today sounded confident he will do so again this year. He said he was neither surprised nor concerned that he suddenly had veteran competition for the backup job. The Giants also have first-year pro Ryan Perrilloux in camp.

"Most training camps have four quarterbacks," Rosenfels said. "I think teams are always looking for more depth at all positions. The quarterback position is no different. No, it wasn't a surprise to me."

Coach Tom Coughlin said the plan was to add a quarterback.

"We wanted to have four quarterbacks in camp," Coughlin said. "David was available. He knows the system, so we brought him back."

Both Carr and Rosenfels played little last season. Rosenfels played quarterback just once, in the fourth quarter of a 41-7 rout in Seattle, and handed off 16 times and thrice took a knee without throwing a pass. Carr made one appearance in San Francisco, at Carolina on Oct. 24, and completed five of 13 passes for 67 yards.

"I really don't worry about the other players, whether it's Eli, whether it's David, whether it's Perrilloux. I try to worry about how I play and my game," said Rosenfels. "I try to treat football like golf in that sense because I can't control how everyone else is doing. All I can control is myself and try to make the most of every play."

Rosenfels was traded to the Giants by Minnesota last Sept. 3, so this is his first training camp with the team.

"I'm focused on getting better out here," Rosenfels said. "It's my first time really being in this offense, as far as to run it in practice and all that stuff. I feel like I've had a good first two days. Also, I'm the holder (for Lawrence Tynes' placekicks). I feel very confident in my abilities and how I'm going to try to get better every day."

Carr was the first overall selection of the 2002 NFL Draft. His career totals include 1,351 completions of 2,264 passes (59.7 percent) for 14,433 yards, 65 touchdowns and 71 interceptions. Rosenfels has thrown 563 passes, completing 351 (62.5 percent) for 4,156 yards, 30 touchdowns and 29 interceptions. Carr has started 79 games, Rosenfels 12.

Is it possible to have room on the final roster for both of them?

"Some teams do two (quarterbacks), some teams do three," Rosenfels said. "I don't know. This team, we only did two last year. I'm sure in the past they've done three at different times. Every team is different. I think they go into each week differently now with two or three quarterbacks based on injuries and what you have with those quarterbacks and the things that they can do and those types of things. That's not my decision."

But he can certainly do a lot to influence it.