Lofa Tatupu is attempting another comeback.
The former Seahawks middle linebacker is reportedly working out for the Broncos Tuesday as he tries to revive an NFL career that has been dormant for the last three seasons.
Tatupu, a second-round pick by Seattle in 2005, made the Pro Bowl in each of his first three seasons and was named a first-team All-Pro in 2007. But his production and availability waned due to knee injuries and concussions, and he was released before training camp in 2011.
Tatupu, 31, was in training camp with the Falcons in 2012 after sitting out the 2011 season, but a torn pectoral muscle ended that comeback attempt. According to Ian Rapoport of the NFL Network, Tatupu was ready to return last offseason but didn't generate much interest.