-- Todd Heap returned to practice on Monday afternoon, but the Baltimore Ravens' two-time Pro Bowl tight end will not play on Friday night when the Ravens face the New Orleans Saints in the Louisiana Superdome.

Heap, who underwent separate surgeries on his ankle and shoulder during the offseason, was taken off the physically unable to perform list. He missed 10 games last year with a severe ankle sprain, and Tuesday will mark his first time in pads since the end of last season.

"For Todd, it's time to go after it," Coach Brian Billick said. "We'll be prudent about it."

Linebacker Peter Boulware, who re-signed with the team last Thursday, also will not play on Friday. Both Heap and Boulware should be ready to play in the Ravens' preseason finale against the Redskins on Sept. 1.

Cornerback Samari Rolle, who injured his right knee early in the second quarter in Saturday's preseason game against the Philadelphia Eagles, did not practice on Monday but said the injury is not serious. His status for Friday is undetermined, though Rolle said he would play if it were a regular season game.

Running back Jamal Lewis was held out against the Eagles after practicing all last week. Billick said that was because of some tenderness in Lewis's ankle, which was surgically repaired during the offseason. Lewis is expected to play this week.

Tough Time for Boller

Third-year quarterback Kyle Boller struggled in the Ravens' 20-14 loss to Philadelphia and was booed at M&T Bank Stadium. Boller committed a turnover on three of the team's first five possessions, and the other two possessions yielded no first downs and resulted in punts. Boller said it was "probably my worst quarter and a half in the NFL."

Billick didn't excuse Boller's performance but pointed out that the quarterback wasn't the only one who made mistakes. He said Boller was hit four of the first eight times he went back to pass. He also said there were running backs and tight ends who missed assignments and "an offensive lineman that just flat whiffed a guy."

"Make no mistake, Kyle is responsible for the way he reacted," Billick said. "He could have mitigated some of it, he could have helped himself through it a little bit, but I do think he responded and kept his cool and came back to lead a pretty good drive to score. Everybody has accountability in the initial sequences of what happened the other night.

"This young man has played well; he did not play well the other night. But there's a long list of guys [who didn't play well]. If you want to throw some people under the bus, there are some pretty high names up on the list that you're not going to want to have go down that way either."

Billick Equates It to Lateral

Billick continued to maintain that the final play of the first half on Saturday -- in which safety Ed Reed scooped up a blocked field goal and ran about 10 yards before pitching the ball to cornerback Chris McAlister, who took it 60 yards for a touchdown -- was a lateral. Reed appeared to be ahead of McAlister when he tossed the ball, but referee Bernie Kukar, after reviewing the play, determined Reed tossed the ball beyond the 39-yard line and McAlister collected it beyond the 40, making it an illegal forward pass.

Said Billick: "I equate it to this: If you put two guys on a train -- this is the old algebra 101 -- if two people are moving on a train going 30 miles an hour going south, and the guy in front throws a ball back to the guy 10 yards behind him, the guy in back is going to catch it -- I don't know what the mathematical equation is, but well past launch point. But he still threw the ball behind him."