Ben Roethlisberger on sideline without crutches for Ravens game

Ben Roethisberger, without crutches, was on the sideline for the Steelers' game with the Ravens, chatting with John Harbaugh pregame. Jason Bridge/USA TODAY Sports

PITTSBURGH -- Ben Roethlisberger is walking around on the Heinz Field sideline four days after spraining his left medial collateral ligament, which is considered a good sign for the franchise quarterback because he's ditched the crutches.

Roethlisberger is expected to watch tonight's Pittsburgh Steelers-Baltimore Ravens game from the sideline and serve as a de facto coach. Roethlisberger said during the week he was negotiating with Steelers coach Mike Tomlin, who has a no-crutches-on-the-sideline policy, to be with his teammates during the game.

He got his wish.

Having enough mobility in the knee to walk a few days after the sprain is a positive sign.

Roethlisberger chatted on the sideline with Pittsburgh Pirates star Andrew McCutchen.