Farve calls it quits; speculation continues
Brett Favre calls it the hardest decision he ever made.
The former Packers' quarterback told Minnesota Vikings' coach Brad Childress yesterday he will not come out of retirement for a second time.
Favre, who turns 40 in October, told ESPN he did not believe he could play at a physically-acceptable level.
And he had to be careful not to commit for "the wrong reasons."