Michael Andretti announces retirement

Michael Andretti announced Monday that this year's Indy 500 was his last and he will hang up his helmet and focus on running Andretti Green Racing after finishing a disappointing 13th in the Indianapolis 500.

The 45-year-old Andretti has led more laps (426) at Indy than any other non-winning driver.

"I'm glad I did what I did," Andretti said Monday about his last two races at Indy. "It was all good, but I was going crazy this month. I just felt there were a lot of things I could have been doing for the team and I couldn't do. So then it just distracts you. It's just too stressful and too much."

"I've become a lot more involved with the team than I ever have been," said Andretti, who co-owns AGR with Kim Green and Kevin Savoree. "I really felt that I needed to be there at the end of last year because we just weren't getting it done. I just really feel like I need to be there pushing to make sure we get everything right and done and just to try to help Kim and Kevin as much as I can.

"Now that I've committed more time to that, it makes it even more difficult to do both sides of it."

Praise from Franchitti

"To me, Michael doesn't need to win a 500 to prove anything," Dario Franchitti said. "He's one of the best drivers I've ever seen. Even yesterday, when I was coming back through the pack, he's as hard to race as ever. The fact that he didn't win at this place has nothing to do with his skill behind the wheel."