The Texans ruled out three players for Monday night’s game against the Steelers, including two of the five left tackles they have started this season. Offensive tackles Jeff Allen (concussion) and Kendall Lamm (concussion) will not play. Allen has started the past three weeks at left tackle. Lamm started in Week 2. The Texans also have started Chris Clark eight times at left tackle, Duane Brown once before trading him and rookie Julien Davenport once.