The Buffalo Bills will not add a quarterback to the roster in the wake of the injury to Alex Van Pelt.
Van Pelt, the team's No. 3 quarterback, suffered a separated right shoulder in Saturday's exhibition game in Denver.
Coach Marv Levy said Van Pelt is out of action from four to eight weeks.
"It is a third-degree separation, which means it is a considerable one," said Levy, who added Van Pelt will not have surgery.
An eight-week layoff would keep Van Pelt out of action for the first four weeks of the regular season. Levy said he did not expect to put Van Pelt on the injured reserve list, which would put him out for the season.
"The likelihood is we're going to keep him on (the roster)," Levy said. "We're not going to put him on injured reserve unless unexpectedly it turns out much more serious than we believe it to be right now."
Levy said being down one quarterback would not hinder practices in any way.
"There's no one out there we can bring in with any chance at all," he said. "I don't like to bring anybody in here as a camp body. It's not right. . . . And in fact, it really is easier to work three (QBs) than it is four."
Van Pelt's injury means a few more snaps for Jim Ballard, an offseason free-agent signee who led the London Monarchs to the World League title in 1996.
Levy said linebacker David White remains out indefinitely with a groin injury. The only other Bill with an injury of note is starting right tackle Corey Louchiey.
"Corey had a mildly sprained ankle going in (to the Denver game)," Levy said. "He felt fine early, and as the game wore on it bothered him a little more. He ought to be fine in a day or two."
A gathering of about 150 watched the Bills practice for an hour and 45 minutes Monday without pads.
Safety Manny Martin intercepted an overthrow from Billy Joe Hobert, and Damien Covington picked off a pass that bounced off Thurman Thomas. Hobert hooked up with Eric Moulds on a deep corner route for the prettiest completion of the workout.
The quarterbacks worked on their system for getting plays from the sideline via hand signals, as opposed to the radio receiver in their helmet.
"Sometimes (the radio) works and sometimes it doesn't, so you've got to have a signaling system as well," Todd Collins said.
The Bills will hold two practices today (9:30 a.m. and 3 p.m.) and one Wednesday (2:30 p.m.).