JACKSONVILLE – Myles Jack's status is trending positively.

Jack, the Jaguars' durable starting inside linebacker, as of Friday afternoon has a better chance to play Sunday than he did early in the week – and that's a good thing for a struggling run defense.

Jack, who did not practice Tuesday and Wednesday because of a knee injury, practiced on a limited basis on Friday. He was listed as questionable on the Friday game status report for the Jaguars' game against the Tampa Bay Buccaneers at TIAA Bank Field Sunday at 1 p.m.

"I thought he looked better than I thought he was going to look coming out on the field," Jaguars Head Coach Doug Marrone said Friday. "I still think we've just got to make sure we made a good decision on whether he's up (active) or not [on Sunday]. But I thought he looked better."

Jack has played in all 62 of the Jaguars' regular season and postseason games since they selected him in the second round of the 2016 NFL Draft.

Cornerback Tre Herndon also was listed as questionable for Sunday after practicing limited with a hamstring injury on Friday. Safety Ronnie Harrison (concussion) and tight end Seth DeValve (oblique) were ruled out after not practicing this week.

DeValve has missed the last two games with his injury, and Harrison has been in the concussion protocol since a loss to the Tennessee Titans this past Sunday.

Marrone said the Jaguars plan to play multiple players in Harrison's place, including possibly rookie free-agent Andrew Wingard and veteran Marcus Gilchrist. The Jaguars signed Gilchrist as a free agent Tuesday.

"We've got a couple of guys," Marrone said. "We're looking at some things both every down and situationally."

The Jaguars enter Sunday having lost their last three games, all in the AFC South – 26-3 to the Houston Texans, 33-13 to the Indianapolis Colts and 42-20 to Tennessee. They allowed more than 200 yards rushing in each game. Their last game at TIAA Bank Field was their last victory: 29-15 over the New York Jets on October 27.

"We all understand it," Marrone said. "We're disappointed and upset and going through the same type of feelings as everyone else. We understand the only way to get rid of that is to fight your way and get a win. We're at home. We talked about being at home.

"We haven't done a good job for the fans and the sponsors. We understand that, so we want to make sure we go out there and win a football game and try to get this thing right."