"I feel like this is a situation where I can build my own confidence," Harrington said Tuesday, "and if I do get a chance, I'll be ready to help this team."
The No. 3 overall draft pick of 2002, Harrington is playing for his third team in three years. After beginning last season as Daunte Culpepper's backup in Miami, Harrington now fills the same role behind Falcons quarterback Michael Vick.
Winning just five of 11 starts last year caused the Dolphins to bench Harrington for the finale in favor of Cleo Lemon. Even so, Harrington's overall experience in Miami was a major improvement over his first four seasons, when he went 18-37 with the Detroit Lions.
"I didn't realize how tough it was until I got out of it, until I saw what else was out there," Harrington said.
Falcons coach Bobby Petrino declared that Harrington will begin Atlanta's mandatory mini-camp in May as the No. 2 quarterback. Chris Redman, who thrived under Petrino at Louisville before injuries and poor performance ended his career with the Baltimore Ravens, will compete with D.J. Shockley for the No. 3 job.
"I'll do whatever it takes and anything they ask me to do," said Redman, who signed on March 23 after spending last year rehabbing shoulder and back injuries and selling insurance in Louisville. "I'm comfortable with the terminology of coach Petrino's system, but he's definitely added a few wrinkles."