For Michael Strahan, 15 NFL seasons and one Super Bowl championship turned out to be enough. The 36-year-old defensive end made it official Monday, when he officially informed the Giants of his intention to retire, putting an end to one of the most storied career in franchise history, according to the NY Daily News. He called team officials just before leaking word of his decision to the media, and just after his now-ex-teammates and coaches began a voluntary practice inside the practice bubble at the Meadowlands.

"It was important that my teammates knew which way I was going before they got on the field to start the work to defend out title," Strahan told FoxSports.com. "It's time. I'm done."

If Strahan doesn't change his mind - something a few of his teammates still believed was possible - he'll leave the game with 141 1/2 sacks. That is officially a Giants all-time record, and unofficially tied with Lawrence Taylor for the most in team history (Taylor had 9 1/2 sacks as a rookie in 1981, one year before sacks became an official NFL statistic). He also set the NFL single-season record with 22 1/2 in 2001.