Adam Vinatieri, the oldest player in the league at 42, adding another game-winning kick to his brilliant career.
D'Qwell Jackson tied it with just over 10 minutes remaining on a 6-yard interception return for a touchdown. Then Vinatieri won it, as he's done so many times before, on a 43-yard field goal with 52 seconds remaining.
Now, a season that began with such promise under new coach Dan Quinn is in danger of falling apart. Atlanta started 5-0, but has lost four of five.
"We haven't finished a game in about a month," receiver Roddy White said. "We've got to find a way to finish one of them."
Vinatieri sure knows how to finish. Playing in his 300th game, he booted his 26th game-winning kick in either the final minute of regulation or overtime.
"I don't ever think you get totally used to it," he said. "But the excitement is always there."
Hasselbeck is 3-0 as a starter this season when Luck's been hurt.
"Matt, the old seasoned vet, is doing a fantastic job just winning games for us," Vinatieri said. "I feel very fortunate to have him leading us while Andrew is out."
The Colts remained tied for first in the AFC East despite a disappointing season that has put heat on the front office and coach Chuck Pagano. With Luck out up to six weeks with a lacerated kidney and torn abdominal muscle, Indianapolis came through with its second straight victory.
Ryan threw three touchdown passes for the Falcons, but will remember this one for the awful throw from his own end zone that Jackson snatched.
"It's just a play I can't make," Ryan said.
Hasselbeck was 23 of 32 for 213 yards, throwing a pair of touchdown passes to Ahmad Bradshaw and shaking off two interceptions.
The Atlanta offense couldn't do anything after Leonard Hankerson hauled in a 3-yard touchdown pass on the first possession of the second half, managing only 67 yards the rest of way with as many turnovers as first downs (three each).
The most crucial mistake came after the Colts downed a punt inside the 1. With the running game struggling, Ryan attempted a play-action pass over the middle. Jackson, after feigning that he was coming up to stuff the run, dropped back into coverage.
Ryan never saw him. Jackson picked off the pass at the 6 and brought it back for a pick-six that happened in the blink of an eye.
"It's tough," Ryan said. "Devonta's been such a big part of what we've done this season."
Copyright 2015 by The Associated Press