Minnesota Vikings offensive guard Jeff Baca, right, reacts as trainers assist injured Minnesota Vikings guard Seth Olsen, center, during the first half of an NFL preseason football game against the Tennessee Titans Thursday, Aug. 29, 2013, in Minneapolis. (AP Photo/Jim Mone)

Minnesota Vikings wide receiver Joe Webb (14) is tackled by Tennessee Titans cornerback Alterraun Verner, right, after making a reception during the first half of an NFL preseason football game Thursday, Aug. 29, 2013, in Minneapolis. (AP Photo/Jim Mone)

Tennessee Titans head coach Mike Munchak looks on during the first half of an NFL preseason football game against the Minnesota Vikings Thursday, Aug. 29, 2013, in Minneapolis. (AP Photo/Jim Mone)

Minnesota Vikings quarterback Matt Cassel is hit by Tennessee Titans defensive tackle Karl Klug while throwing a pass during the first half of an NFL preseason football game Thursday, Aug. 29, 2013, in Minneapolis. (AP Photo/Ann Heisenfelt)

Tennessee Titans quarterback Jake Locker throws a pass during the first half of an NFL preseason football game against the Minnesota Vikings Thursday, Aug. 29, 2013, in Minneapolis. (AP Photo/Jim Mone)

Tennessee Titans wide receiver Justin Hunter (15) reacts after scoring a touchdown during the first half of an NFL preseason football game against the Minnesota Vikings Thursday, Aug. 29, 2013, in Minneapolis. (AP Photo/Jim Mone)

Minnesota Vikings cheerleaders perform during the first half of an NFL preseason football game between the Minnesota Vikings and the Tennessee Titans Thursday, Aug. 29, 2013, in Minneapolis. (AP Photo/Ann Heisenfelt)