My position-by-position preview of this year's Montana Grizzly football team is getting close to wrapping up.

The cornerback's job is to stop the opposing team's wide receiver from making a catch. It's the simplest job to describe, but one of the most difficult to execute.

The Grizzlies have an All-American candidate at one corner position, but at the other, a lot is still up in the air:

Trumaine Johnson, Sr.
Donny Lisowski, Sr.
Houston Roots, Sr.
Kevin Frank, Jr.
Marlin Miles, Jr.
Sean Murray, So.
Josh Dennard, Fr.
Nate Harris, Fr.

PLAYER TO WATCH: Trumaine Johnson

SLEEPER: Sean Murray

FUTURE STAR: Nate Harris

Trumaine Johnson is firmly entrenched on one side of the field. A likely FCS All-American player, Johnson has his sights set on an NFL career. The spot opposite him, though, is currently up for grabs between fellow seniors Houston Roots and Donny Lisowski. Roots had an outstanding spring camp, while Lisowski has already proven his skills in high-pressure games. Behind those three, sophomore Sean Murray appears to be the dime back. Murray returned an interception for a touchdown last year in the Grizzlies' season opener. True freshman Nate Harris, originally thought to be a redshirt candidate, has wowed the coaches so much that he most likely will see some snaps this year. Marlin Miles and junior college transfer Kevin Frank will probably cut their teeth on special teams, while Josh Dennard may redshirt.

Also, during yesterday's wide receiver preview, I mentioned that if Aaron Roberts could shake off his injuries, he could be a good player. Unfortunately, Roberts felt he could not return as a healthy player and has ended his college career.