Report: Texans DE Jonathan Greenard (calf) headed to IR

Houston Texans defensive end Jonathan Greenard is headed to injured reserve with an ailing calf, ESPN reported on Saturday.

Greenard sustained the injury during Thursday's practice. He did not participate in Friday's session and was ruled out for Sunday's game against the host Las Vegas Raiders.

Greenard, 25, recorded nine tackles -- including five for loss -- and 1.5 sacks in four games this season.

He has 61 tackles,