Zach Mettenberger thinks he’s shown the Titans enough to be 2015 starter

The Titans haven’t officially ruled him out, but it doesn’t look like we’ll be seeing rookie quarterback Zach Mettenberger again this season due to the shoulder injury he aggravated in last Sunday’s game. If so, that leaves Mettenberger with six starts for the Titans to contemplate as they formulate their plans at quarterback for the…