For the Tennessee Titans, it’s all about getting Marcus Mariota at 100 percent after he suffered a broken right fibula late last season. Mariota is the Titans’ franchise quarterback and needs to be healthy in order for this team to contend for a playoff spot in 2017.

With that said, depth behind Mariota is almost equally as important. The former No. 2 overall pick has been injured late in the year in each of his first two NFL seasons.

That’s why the Titans figured it made sense to hand backup Matt Cassel a two-year contract in early March. The idea is to protect the team should Mariota go down with a short-term injury.

Unfortunately for the Titans, Cassel will now miss the next six weeks after injuring his right thumb on Tuesday. Cassel will undergo surgery and is expected to miss the remainder of the team’s OTAs as well as mandatory minicamp. Though, he should return in time for training camp late in the summer.

This isn’t necessarily huge news considering we’re in the offseason. But any time a backup goes down behind an injury-prone starter, it is most definitely relevant. That’s only magnified at the all-important quarterback position.

Cassel, a 12-year veteran, has started 80 games throughout his career. He remains one of the most-experienced backups in the entire NFL.