Bucs’ Ali Marpet walks away from NFL at 28 with $20m still left on contract

• Guard emerged from small college to NFL's biggest stage
• Marpet helped protect Tom Brady during Bucs' Super Bowl win

Ali Marpet, who helped protect Tom Brady during Tampa's Super Bowl title in the 2020 season, has announced his retirement at the age of 28.

The left guard, who is in the prime years of his career and was named to the Pro Bowl last season, confirmed the surprise decision on Instagram on Sunday. ESPN reported the decision was down to health concerns.