Aaron Gibson's six NFL seasons
Gibson was drafted 27th overall by the Detroit Lions in the 1999 NFL Draft out of Wisconsin. He weighed 380 pounds at the NFL Combine but ballooned to 410 by his second NFL season. He played offensive tackle, the only position where his frame was sustainable on an NFL field.
He started 24 games over four seasons in Detroit before being traded to Dallas in 2002. He played one season with the Cowboys, one with the Bears (2003), and one with the Bills (2004). His career spanned 39 starts and 87 total games. He retired after the 2004 season at age 27 because his knees and lower back could no longer sustain the position’s demands.
The 350+ club
Behind Gibson, the heaviest known NFL players in modern history: Terrell Brown (Chiefs, listed at 380 lbs in 1999); William Perry (Bears, 1985-93, listed at 335-365 lbs depending on season — most famous for his ‘Refrigerator’ nickname and his role as a fullback in the 1985-86 Super Bowl-winning Bears offense); Ted Washington (Bears/49ers, 1991-2007, listed at 365 lbs); Daniel Faalele (Ravens, drafted 2022 at 384 lbs).
The NFL doesn’t publicly verify combine weight as the official roster weight; teams typically list their actual playing weight a touch lighter. Many players have unofficially exceeded 400 pounds at various points in their careers. Among current active players, Daniel Faalele (Ravens) and Aireontae Ersery (Vikings, 2024 draft) are both listed at 380+.
Why heavier hasn't worked
Beyond about 380 pounds, the structural issues for an NFL career compound: ankles, knees, and lower-back vertebrae have to absorb impact at every snap, and the long-term wear at 400+ pounds typically forces retirement before age 30. The position with the most-tolerable upper-weight limit is offensive tackle (where lateral movement is needed less than at guard or center), but even there the modern league prefers 6’6″ / 320-330 lb athletes who can pull and pass-protect.
The 1985 William Perry experiment — using a 335-pound defensive lineman as a goal-line fullback — has become largely impossible in the modern NFL because pass-blocking schemes don’t accommodate that body type. Gibson’s 410-pound peak weight remains the verified max in NFL history.
More in Physical Extremes
Shaquille O'Neal Height: 7'1" and 325 lbs Shortest NBA Player Ever: Muggsy Bogues at 5'3" Shortest NFL Player Ever: Jack Shapiro at 5'1" Tallest NBA Player Ever: Mureșan and Bol at 7'7"Background facts cross-referenced with the Wikipedia article on Aaron Gibson and Pro-Football-Reference / Basketball-Reference public records.