OXNARD, Calif. -- Dallas Cowboys owner/general manager Jerry Jones is apparently taking over defensive coordinator Rob Ryan's role as the team's NFC East instigator.

On the day Ryan vowed to watch his often outspoken mouth, Jones fired a jab at the New York Giants, who crushed the Cowboys' playoff hopes in the 2011 regular-season finale en route to their second Super Bowl title in five years.

"Y'all should come to that (Cowboys) stadium and watch us beat the Giants' ass," Jones told fans during a ceremony to signal the opening of Cowboys' training camp Monday, a festival-like event that featured a few skydivers and a performance from the franchise's famous cheerleaders.

Cowboys coach Jason Garrett, when asked about Jones' comment, said Tuesday it's not his place to tell his boss what to say.

"Jerry Jones owns this football team," Garrett said. "He has owned it for 23 years, so he can do anything he wants."

The Cowboys' players didn't seem to mind hearing that kind of bravado from their boss, however.

"That's what he said? I like it," cornerback Brandon Carr said Tuesday. "I feel the same way. I mean, you've got to go into each game feeling like you're going to dominate the other team."

Just don't expect to ever hear anything like Jones' headline-making comment from the mouth of the Cowboys' head coach.

"We don't make any guarantees around here," Garrett said. "We're going to work hard every day to put a great football team together. We're in the process of doing that."

The defending Super Bowl champions don't come to Cowboys Stadium, where Eli Manning's Giants are 3-0, until Oct. 28. The Cowboys and Giants kick off the NFL season on Sept. 5 at MetLife Stadium, where the Cowboys' 2011 season ended with a 31-14 loss in the de facto NFC East title game on New Year's Day.

Manning threw for 746 yards and five touchdowns in the two wins over the Cowboys last season, one of the primary reasons the Cowboys made upgrading their cornerback corps the top offseason priority, signing Carr to a five-year, $50.1 million deal and trading up in the draft to select LSU's Morris Claiborne with the sixth overall pick.