JACKSONVILLE, Fla. - Jacksonville Jaguars receiver Marqise Lee is unlikely to play in the team's preseason opener against Pittsburgh next week.

Lee strained his right hamstring in practice Wednesday, and coach Gus Bradley said Thursday the second-year pro will be re-evaluated on a week-to-week basis. Bradley added that Lee is unlikely to play against the Steelers on Aug. 14.

Lee, a second-round draft pick from USC in 2014, missed all of organized teams activities and a three-day minicamp because of a left knee injury.

Also Thursday, tight end Julius Thomas left practice with tightness in his back. But Bradley says he doesn't think it will keep Thomas from practicing Friday.

Bradley also says defensive end Chris Clemons (personal issues) won't play against the Steelers.

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