JACKSONVILLE, Fla. (AP) -- The Jacksonville Jaguars could be without three defensive starters at Houston on Sunday.
Coach Doug Marrone listed defensive end Josh Allen (knee), linebacker Myles Jack (ankle) and rookie cornerback CJ Henderson (shoulder) as questionable against the Texans.
Losing Allen would add to the team's pass rush woes. Jacksonville (1-3) has four sacks, and Allen has half of those while getting the most consistent pressure of anyone on the defense.
Jack leads the Jaguars with 37 tackles, and Henderson leads the team with four pass breakups.
Jacksonville's secondary already was thin after nickel cornerback D.J. Hayden (hamstring) was placed on injured reserve earlier this week. Without Hayden, the team was expected to have rookie Chris Claybrooks or newcomer Sidney Jones on the field more at Houston. If Henderson can't play, Claybrooks and Jones would both see significant action.
Backup defensive tackle Daniel Ekuale (ankle) was a fourth defender listed as questionable.
The Jaguars also will have their fourth placekicker in as many games. Stephen Hauschka will make his Jaguars debut after missing last week's game with a sore knee.
Josh Lambo (hip) was placed on injured reserve after Week 2. Rookie Brandon Wright pulled a hamstring in his NFL debut in Week 3, prompting Hauschka's signing. Hauschka was unable to go last week, forcing the team to call up Aldrick Rosas from the practice squad.
Rosas was placed on the team's practice squad injured list Friday, and Jacksonville signed first-year kicker Jon Brown to the practice squad.
''I think what we've seen these past couple weeks is unprecedented; I've never seen that before,'' Marrone said. ''It's almost like every day you're wondering who's going to be out there.''
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