Titans taking a look at several non-quarterbacks this week

No matter how many times Titans coach Ken Whisenhunt backs second-year sixth-rounder Zach Mettenberger, it’s clear they have to look for some degree of answer at quarterback. Either using the second overall pick in the 2015 NFL Draft on Marcus Mariota or parlaying it into Philip Rivers would solve that problem, ostensibly. But there’s always…