How healthy is Mettenberger's knee? 

May, 18, 2014
May 18
8:00
AM ET
Rookie quarterback Zach Mettenberger tore his left ACL in November, an injury that likely played a big role in why he sank to the Tennessee Titans all the way in the sixth round. After his first workouts with the team, he admitted that the joint is not yet 100 percent healthy.