After an offseason of speculation, Favre officially signed with the Minnesota Vikings on August 18, 2009.
He made his Vikings debut in the season opener against the Cleveland Browns.
In the 34–20 victory, he passed for 110 yards and one passing touchdown.
In Week 4, Favre had his first game against his former team.
In the home game against the Green Bay Packers, he had 271 passing yards and three passing touchdowns in the 30–23 victory.
With the victory over the Packers, he became the first quarterback in NFL history to defeat every one of the league's 32 franchises since the NFL first expanded to 32 franchises in 2002.
Favre helped lead the Vikings to a 6–0 start going into Week 7.
The Vikings suffered their first setback against the Pittsburgh Steelers in a 27–17 loss.
Week 8 was a significant one for Favre as he faced off against the Packers at Lambeau Field for his first game returning to Green Bay.
He passed for 244 yards and four passing touchdowns in the 38–26 victory.
In a Week 12 victory over the Chicago Bears, he passed for 392 yards and three touchdowns in the 36–10 victory.
In the regular season finale, he passed for 316 yards and four touchdowns in the 44–7 victory over the New York Giants.
Favre finished the 2009 season with 4,202 passing yards, 33 touchdowns, and seven interceptions.

Overall, Favre had a landmark season in which he surpassed former Vikings defensive end Jim Marshall for consecutive starts at one position, with 291, and surpassed Dan Marino's previous record for four-touchdown games, and was named to his 11th Pro Bowl.
The Vikings finished with a 12–4 record and earned a first-round bye.
In the Divisional Round against the Dallas Cowboys, he recorded 234 passing yards and four passing touchdowns in the 34–3 victory.
They advanced to the NFC Championship game, ultimately losing in overtime to the eventual Super Bowl XLIV champion New Orleans Saints.
He passed for 316 yards, one touchdown, and two interceptions in the 31–28 loss.
Despite the loss, Favre set playoff records for pass completions and passing yards previously held by Joe Montana.
After an offseason of speculation, Favre officially signed with the Minnesota Vikings on August 18, 2009. He made his Vikings debut in the season opener against the Cleveland Browns. In the 34–20 victory, he passed for 110 yards and one passing touchdown. In Week 4, Favre had his first game against his former team. In the home game against the Green Bay Packers, he had 271 passing yards and three passing touchdowns in the 30–23 victory. With the victory over the Packers, he became the first quarterback in NFL history to defeat every one of the league's 32 franchises since the NFL first expanded to 32 franchises in 2002. Favre helped lead the Vikings to a 6–0 start going into Week 7. The Vikings suffered their first setback against the Pittsburgh Steelers in a 27–17 loss. Week 8 was a significant one for Favre as he faced off against the Packers at Lambeau Field for his first game returning to Green Bay. He passed for 244 yards and four passing touchdowns in the 38–26 victory. In a Week 12 victory over the Chicago Bears, he passed for 392 yards and three touchdowns in the 36–10 victory. In the regular season finale, he passed for 316 yards and four touchdowns in the 44–7 victory over the New York Giants. Favre finished the 2009 season with 4,202 passing yards, 33 touchdowns, and seven interceptions.
Overall, Favre had a landmark season in which he surpassed former Vikings defensive end Jim Marshall for consecutive starts at one position, with 291, and surpassed Dan Marino's previous record for four-touchdown games, and was named to his 11th Pro Bowl. The Vikings finished with a 12–4 record and earned a first-round bye. In the Divisional Round against the Dallas Cowboys, he recorded 234 passing yards and four passing touchdowns in the 34–3 victory. They advanced to the NFC Championship game, ultimately losing in overtime to the eventual Super Bowl XLIV champion New Orleans Saints. He passed for 316 yards, one touchdown, and two interceptions in the 31–28 loss. Despite the loss, Favre set playoff records for pass completions and passing yards previously held by Joe Montana.
Brett Favre