FAYETTEVILLE — "Chris Marshall is down there somewhere."

That's probably what Arkansas quarterback KJ Jackson has been thinking whenever he drops back to pass this season.

When Marshall suffered an apparent leg injury in the first half against Vanderbilt, there was a moment of what's going to happen next — not only on the sideline but for Arkansas fans in the stands and those watching at home.

Arkansas Razorbacks quarterback KJ Jackson (7) celebrates his touchdown against the Vanderbilt Commodores during the second half at FirstBank Stadium. | IMAGN IMAGES via Reuters Connect

Marshall, who leads the team receptions, yards and touchdowns, he is expected to return for the Battle Line Rivalry inside Razorback Stadium on Halloween night.

"He's doing well," Arkansas coach Ryan Silverfield said of Marshall on Wednesday.…