The Steelers today placed guard Willie Colon on injured reserve, ending his season. It’s the third straight season to end with a trip to injured reserve for Colon. ET on Tuesday and they’ve chosen to do that by placing guard Willie Colon on injured reserve. Colon’s knee was injured a second time Dec. That figures to be their look the rest of the way up front now that they’re sure Colon isn’t coming back. The Steelers had a roster exemption until 4 p.m. today for him. Whether they kept him around in hopes of better news on the health front or because they knew they’d need to open a spot for Mendenhall this week is immaterial now that he’s been shut down for the rest of the year.