Jameis Winston is entering a make-or-break season in 2019, as his rookie contract reaches its final year, and he might begin the campaign without his expected backup quarterback.
"His shoulder popped out," Arians said after the game, per ESPN. "He was hurting pretty good, but [I told him], 'Good thing it's not your throwing shoulder. You'll be all right.'"
Gabbert was replacing Winston, who had played the entire first half. The backup was then spelled by third-stringer Ryan Griffin, who completed 11 of 17 passes for 121 yards and a score in relief. Gabbert finished 4-for-5 for 33 yards.
It's not known how long Gabbert will be out or if his injury requires surgery. The Bucs signed quarterback Vincent Testaverde on Saturday before its preseason finale.
The former first-round pick joined Tampa Bay in free agency, replacing journeyman Ryan Fitzpatrick as Winston's backup. Gabbert played in eight games for the Tennessee Titans last season, starting three. He threw for 626 yards, four TDs and four INTs as the backup to Marcus Mariota, who was selected one spot behind Winston in the 2015 draft.