Titans waive Zach Mettenberger

The Titans are moving on without quarterback Zach Mettenberger. The team announced Monday that they have waived the 2014 sixth-round pick. They signed Matt Cassel to play behind Marcus Mariota earlier this offseason and also have Alex Tanney on their 90-man roster. Mettenberger made six starts during his rookie season and generated some talk about…