What retirement? Favre coming back with Vikings

EDEN PRAIRIE, Minn: Brett Favre unretired again and will be wearing purple this time. Chew on that, cheeseheads.

Pulling an about-face on his playing status for the second straight summer, the three-time MVP quarterback will suit up for his old rivals Minnesota, starting with Friday's preseason game at the Metrodome. The goal: help the Vikings win that elusive first Super Bowl.

"You need to cross over that line. You need to take that chance," Favre said at his introductory news conference on Tuesday, recalling the advice Minnesota coach Brad Childress gave him: "At 39 years old, your arm may not feel like it did at 21, but the pieces are in place here where you don't have to do as much."