Tampa Bay Buccaneers running back Earnest Graham will have season-ending surgery on his torn Achilles' tendon, a league source said Monday.
Graham suffered the injury during the Bucs' 24-18 loss to the Chicago Bears on Sunday in London. He started the game in place of LeGarrette Blount, who missed his second consecutive game with a knee injury.
Kregg Lumpkin is the lone healthy running back on Tampa Bay's active roster. He carried the ball eight times for 15 yards Sunday.