Conversation so far:
what is Walter Payton's play style?
Payton refused to deliberately run out-of-bounds and always delivered some punishment to his tacklers before being forced off the field or forced down.
how else did he play?
One of Payton's signature maneuvers was the "stutter-step", a high-stepping, irregularly paced run.
how were his stats?
career leader in receptions for a running back with 492 for over 4,500 yards, and still holds the career record for a running back with 8 touchdown passes.
any other records?
After scoring touchdowns, Payton declined to celebrate; instead, he would often hand the ball to his teammates or the official.
how else did he play?
He re-invented the practice of stiff-arming his tacklers, which had gone out of favor among running backs in the 1970s.
anything else intersting in the article?
His running gait was somewhat unusual, as his knees were minimally bent, and the motion was largely powered from the hip.

Question: what else was different about his style?
Self-contained rewrite: Aside from having an unusual running gait, what else was different about Walter Payton's style?