Favre described his time at the Vikings as a "wonderful experience"
NFL legend Brett Favre has retired from the sport for a third time.
Favre, 41, previously quit in 2008 and 2009 but returned on each occasion - firstly with the New York Jets and then with the Minnesota Vikings.
But the quarterback, holder of most consecutive starts in the sport (321, including play-offs), insisted: "I know it's time, and that's OK. It is."
Favre sat out his final game through injury as the Vikings lost 20-13 to Detroit finish last in the NFC North.
The victory was not enough to see Detroit into the play-offs however, with the wildcard weekend set for the weekend of 8/9 January.
The New York Jets will travel to Indianapolis, Baltimore to Kansas, New Orleans to Seattle and Green Bay to Philadelphia, with Pittsburgh, New England, Atlanta and Chicago awaiting the winners in the divisional play-offs the following weekend.
The Conference Championships will take place on Sunday, 23 January, with Super Bowl XLV on the 6 February.
Favre won the Super Bowl with Green Bay in 1997 during a 16-season stint with the Packers which helped cement his place as one of the sport's finest ever quarterbacks.
The Mississippi native is currently the NFL career leader in wins (186), passing yards (71,838), touchdown passes (508) and interceptions (335).
This season, however, he has been beset by injury and controversy.
A shoulder problem forced him to sit out a match for the first time since 1992 in early December, while he was fined $50,000 (£32,250) for failing to co-operate with an NFL investigation into his off-field conduct while with the Jets.
Still, Favre insists he has no regrets about playing on with the Vikings this season.
"It's been a wonderful experience for me," he said. "This year did not work out the way we would have hoped, but that's football. I don't regret coming back. I enjoyed my experience here.
"I hold no regrets and I can't think of too many players offhand that can walk away and say that. Individually and from a team standpoint, it was way more than I ever dreamed of.
"I don't know for me if it's ever easy [to retire]. I'm sure throughout this year, the comment has been made that, 'We'll wait and see in August or September' and that's fine. It's time. I'm OK with it."
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