McNabb, who lives in nearby Chandler, Ariz., and Baltimore Ravens tight end Todd Heap, who played college football at Arizona State, joined Cardinals quarterbacks John Skelton, Max Hall and Richard Bartel and wide receivers Steve Breaston, Stephen Williams and 2011 seventh-round draft pick Demarco Sampson. The "low-key" workout was closed to all but one member of the media.
"I always believe in a low profile," said McNabb, the Redskins' quarterback. "Guys get a chance to work, and it's not something you're broadcasting all over the place, telling everybody what you doing and who is in town and all of that.
"I think guys understand in this period the work you need to put forth. As you can see, we push each other. A lot of us have known each other for a while."
On his future, McNabb said: "The next couple years, we'll see what happens. Who knows where I'll be anyway? I'm looking forward to that, and when that time comes, step in there and be ready to go."
For his part, Skelton, who was 60-of-126 passing for 662 yards and two touchdowns with two interceptions in four starts last season, was glad the Cardinals didn't draft another quarterback.
"The coaching staff has been honest with me all along," he said. "They've said, 'No matter who we bring in, whether it's through the draft or free agency, we just want you to compete.' I'm sure they're going to be scrambling hard to find someone in free agency, so whoever it is, I'm just going to get in here and compete."