It’s been 15 years since the Houston Texans took David Carr first overall. He was the first draft pick in franchise history, and the hope was that he would be the franchise quarterback to lead the organization from expansion team to perennial playoff contender. Instead, Carr lasted five years in Houston. He started 75 games, won just 22 of them, threw 59 touchdowns, 65 interceptions, and was sacked a mind-blowing 249 times, including 76 as a rookie. He played five more seasons -- all as a backup -- for three different teams before calling it a career in 2012. And perhaps a backup role is where we are in Brock Osweiler’s NFL career arc. Like Carr, Osweiler was tabbed to be the Texans’ future. And like Carr, Osweiler struggled mightily in his first year in Houston. But instead of getting another chance to prove himself, the Texans instead dumped Osweiler on the Browns, and threw in a 2018 second-round pick for their troubles. And that admission -- that the organization only needed a few months to realize they had made a grave mistake -- seemed hasty to Carr. “Gary Kubiak’s system in Denver was so different,” Carr said, via the Houston Chronicle’s David Barron. “It was completely different than what Bill (O’Brien) was asking him to do in Houston with the option routes and young receivers. There wasn’t enough time.