Bill O’Brien: The 9-7 bar is too low

Texans coach Bill O’Brien turned in winning seasons in each of his first two years on the job with a second straight 9-7 record earning an AFC South title in 2015. The Texans responded to that success by overhauling their offense this offseason. Quarterback Brock Osweiler, running back Lamar Miller and a pair of wide…