That injury history spells out the inherent risk in signing Romo. He will turn 37 years old in April and there is no guarantee he will last even half a season. The Texans could be more attractive to Romo because they have a better offensive line than Denver, and it's possible Romo would not have to uproot his family in Dallas. The Broncos, meanwhile, have a championship defense and pedigree. Signing Romo despite his risk makes particular sense for Denver because the team doesn't necessarily need Romo. They have two promising young quarterbacks in Trevor Siemian and Paxton Lynch and could survive if Romo was hurt once again. The Texans have a more pressing need at quarterback but less cap space and are already forking over $16 million guaranteed to Osweiler in 2017.