Cincinnati Bengals running back BenJarvus Green-Ellis returned to practice Wednesday after sitting out Tuesday with a hamstring injury. Green-Ellis tweaked the hamstring in warmups before Sunday's victory over the Baltimore Ravens and didn't play in the game. His practice status is listed as limited. Green-Ellis' availability for Saturday's wild-card playoff game against Houston remains unknown. Without him, the Bengals would be missing a key part of their offense The team's leading rusher this season has gained 1,094 yards on 278 carries and and scored six touchdowns. The Bengals practiced indoors for a second straight day to escape the cold weather outside. Safety Chris Crocker (quad) participated in stretching drills Wednesday and defensive end Wallace Gilberry (unspecified injury) missed practice for a second consecutive day.