No. 1 overall pick Jadeveon Clowney had arthroscopic surgery on his right knee Monday and will be out four to six weeks, Texans' coach Bill O'Brien said. The surgery was to repair a torn meniscus Clowney suffered late in the second quarter of the Texans' 17-6 win over Washington, a source confirmed to ESPN's Adam Schefter. Read more http://espn.go.com/nfl/story/_/id/11489674/jadeveon-clowney-houston-texans-4-6-weeks-knee-surgery