As the Redskins prepare for their preseason finale against the Jacksonville Jaguars, head coach Jim Zorn is preparing for the first round of roster cuts.

All NFL teams must pare their rosters from 80 to 75 on Sept. 1.

"It really is the most difficult task," Zorn said. "As a coaching staff we have to decide which 53 [players] are going to make it, who the possible practice squad hopefuls are, and then how to get that chemistry with the group we're going to have."

Zorn discussed the last week of preseason during his weekly appearance on "The Jim Zorn Show," airing on Saturday at 7:30 p.m. ET on NBC-WRC 4. The show is hosted by Den Hellie and Larry Weisman.

During the 30-minute show, Zorn also looked ahead to the Redskins' preseason finale against the Jacksonville Jaguars.

"We still have some question marks and guys who still can make the team based on this last effort," Zorn said. "It is an important game for some. Some guys have already made the team and so we're going to see these guys play [against Jacksonville] and still have an opportunity to compete."

The second round of roster cuts is more substantial. Teams must reduce their rosters from 75 to 53 on Sept. 5.

Zorn said that Clinton Portis is not expected to play against the Jaguars.

"He really doesn't need to go," Zorn said. "There are certain guys that I know what they're about. I'm going to rest them for our season opener."

Portis suffered a rib injury in the Redskins' 27-24 loss to New England on Friday. X-rays came back negative.

This week's edition of "The Jim Zorn Show" also includes a Redskins Legacy feature and a chalk talk session.