The No. 2 quarterback job in Green Bay is up for grabs.

During the off-season program, Packers quarterbacks coach Alex Van Pelt said Matt Flynn was Aaron Rodgers top backup, "and deservedly so" based on his performance last season.

Three weeks into training camp, it looks like a horse race between Flynn and Scott Tolzien.

"I think it's up in the air right now," Van Pelt said Wednesday. "It's in a competition. That's healthy for everybody."

Flynn, 29, started Saturday night in a driving rainstorm against Tennessee and played 30 snaps in five series. Tolzien, 26, played in somewhat better weather for 23 snaps in three series.

"Right now both of them are playing well," Van Pelt said. "Obviously, with Matt's knowledge of the system, he's at a little bit of an advantage.

"Scotty's now had an off-season working in the system. He's understands the footwork and the timing and the progressions and the routes, so he's coming on as well."

Van Pelt, in his first year as quarterbacks coach, has worked hard with Tolzien on his delivery.

"One thing we tried to correct was keeping his elbow tighter to the left side of his body," he said. "We tried to get him to stay more compact. We've gone through drills, and he's improved."

In a switch this week that Van Pelt said was unrelated to performances against the Titans, Tolzien followed Rodgers in every 11-on-11 segment of practice after Flynn went second for the first two weeks.

Flynn, said Van Pelt, responded with a "great week of practice."

Rodgers will start Saturday afternoon in St. Louis and probably Aug. 22 against Oakland. The rotation this week hasn't been set.