ESPN NFL Training Camp 2007

Cleveland Browns: Brady Quinn is still hanging around and waiting for the Browns to call his name -- on game day. The high-profile rookie, who stayed on the sideline in Cleveland's exhibition opener last week, is expected to make his NFL debut -- probably a brief one -- on Saturday night for the Browns, whose quarterback competition is nearing a conclusion without him even in the conversation or debate.

Quinn will likely get his first action late against the Lions, who considered picking the Notre Dame quarterback in April's draft before selecting wide receiver Calvin Johnson at No. 2 overall. Quinn, though, slid to Cleveland at No. 22, and although the Browns mortgaged part of their future to get him -- trading a 2008 first-round pick to Dallas -- they're in no hurry to rush him onto the field.

Following an 11-day contract holdout, when he missed 16 training camp practices, Quinn didn't take a snap in last week's preseason win over Kansas City. And he's going to have to wait his turn before he faces the Lions.

"I might give him a few snaps in the fourth quarter to see what he can do," was all coach Romeo Crennel would say.

Quinn is still way behind in learning Cleveland's new offense and hasn't moved out of the No. 4 spot on the depth chart. Crennel was asked if the 22-year-old will enter the competition if he "wows" the Browns.

"Well," Crennel said. "He's got to wow us first."

During practice this week, Quinn took some snaps with Cleveland's first-team offense but worked primarily with the reserves. He's eager to do more.

"All quarterbacks are greedy," Quinn said. "We want every rep, and we want to get in there and play all the time. It's tough, especially coming from the situation I was in [at Notre Dame]. But you have to realize you've got to earn everything you get here.

"I've got to show the guys I've got a strong grasp of the offense, the concepts, and am ready and willing whenever they want to call my number," he said.

Elsewhere in NFL camps:

Atlanta Falcons: Third-string quarterback D.J. Shockley was carted off the field with four minutes remaining in the fourth quarter after spraining his left knee in Atlanta's 13-10 exhibition game win over the Bills on Friday.

Falcons coach Bobby Petrino said Shockley will have an MRI exam Sunday to asses the severity of the injury.

"It didn't look good," Petrino said. "I didn't like the way he looked on the field."

Shockley, a 2006 seventh-round draft pick, was hurt after attempting to cut to the inside of the field on a 10-yard scramble. Shockley's right foot slipped when he planted it at the Buffalo 15-yard line, causing his left leg to twist awkwardly before he was tackled by linebacker Josh Stamer.

Shockley was 4-of-5 for 46 yards passing and added 18 yards rushing on three carries. He was replaced by second-stringer Chris Redman.

"Obviously he's distraught," Atlanta quarterback Joey Harrington said. "That's not anything you like to have happen. It may be a little while before he's able to get going again."

Shockley didn't play in any Falcons games last season as a rookie.

Denver Broncos: Wide receiver Javon Walker, who tweaked his surgically-repaired right knee during Thursday's first practice, will miss the Broncos' preseason game Saturday night against the Cowboys along with left tackle Matt Lepsis, whose return from reconstructive knee surgery has been delayed by a pulled groin muscle and right tackle Adam Meadows (calf).

Guard Ben Hamilton (concussion) and rookie tackle Ryan Harris (back) are also hurt, and head coach Mike Shanahan said tight end Chad Mustard will play right tackle against the Cowboys.

Buffalo Bills: The Bills were dealt a blow when backup defensive end Ryan Denney broke a bone in his left foot on the opening kickoff. The injury leaves Buffalo with only three experienced defensive ends -- Chris Kelsay, Aaron Schobel and Anthony Hargrove.

Bills coach Dick Jauron didn't give a timeframe of how long Denney will be gone, but he wasn't optimistic.

"At the very least it will be a substantial amount of time," he said.

Information from The Associated Press was used in this report.