The Pittsburgh Steelers have added some cornerback depth. The team announced that they signed Trevon Mathis, according to Pro Football Talk.

This move doesn't come across as hugely important. Mathis was an undrafted free agent after the 2018 draft and wasn't able to hold on to a roster spot last year. Mathis played his college ball at Toledo and wasn't particularly impressive.

The Steelers cornerbacks have been riddled with injuries lately. Joe Haden suffered an ankle injury, while Artie Burns and Justin Layne have undisclosed albeit minor injuries. Mathis is another body to throw into the mix in training camp. The path to making the roster is a rocky one for the former Rocket. Cornerback is a particularly deep position in the Steel City, with all three starting spots locked up. Haden and new signee Steven Nelson have the outside cornerback jobs, and slot standout Mike Hilton won't be dislodged. Former starter Artie Burns, third-round pick Justin Layne, and 2017 third-rounder Cam Sutton round out the backups. Mathis would have to play some extraordinary preseason football to make the cut.

While it seems unlikely that Mathis will make the final roster, his chance to prove himself comes on Friday against the Tampa Bay Buccaneers. This preseason game is make-or-break for a lot of Steelers players. It's certain that at least three running backs will be cut, and backup quarterback Joshua Dobbs is probably on his last chance. But as the saying goes, iron sharpens iron. Some will come out stronger and others will be looking for a job elsewhere by week one.