Clowney has a torn meniscus, according to multiple reports, and may miss four to six weeks after undergoing arthroscopic surgery.
NRG Stadium, the Texans' home field, employs two different playing surfaces. NFL games are played on grass, while all other events, including college football games, take place on artificial turf. LSU and Wisconsin played at the stadium on Aug. 30.
Because the stadium has a retractable roof, the grass is laid down in eight-foot square "trays" so it may be removed and exposed to sunlight. In 2011, former Texans punter Brett Hartmann sued the owners of the stadium after he caught his foot in a seam between the trays, tearing his ACL and fracturing his fibula.
- Dan Gartland