Alex Collins surprisingly not practicing for Ravens with calf injury

OWINGS MILLS, Md. -- Baltimore Ravens running back Alex Collins was a surprise no-show for Wednesday's practice with a calf injury.

Collins, the Ravens' leading rusher, was an unexpected absence because he was on the field for the final plays in Monday night's 23-16 win over the Houston Texans. He briefly left early in the game while holding his hand or wrist but quickly returned.

Depending on the severity of the injury, it could mean Javorius Allen receives more carries and Terrance West becomes active for the first time since Oct. 8.

Collins, who has started the last six games, is the 13th-leading rusher in the NFL. He ranks sixth with a 4.9-yard per carry average.

The Ravens' running game will be key on Sunday, when they face the Detroit Lions and the NFL's No. 24 run defense.