HOUSTON — Broncos inside linebacker Alex Singleton was fired up during his team’s matchup against the Houston Texans, but it came with a steep price in Sunday’s 22-17 loss. The Texans faced a fourth-and-2 in the first quarter when left tackle Laremy Tunsil was called for a false start. But the penalty didn’t matter because Singleton was flagged for unnecessary roughness on the same play after he got into a verbal altercation with rookie quarterback C.J.