Jacksonville Jaguars quarterback Blaine Gabbert left in the first quarter of Sunday's game against the Houston Texans with a bruised right elbow.
Chadd Henne replaced Gabbert, whose return is questionable, according to the team.
Gabbert was injured during the Jaguars' first possession when he was hit by the Texans' Danieal Manning and fumbled the ball.
The Texans led 7-0 when Henne came into the game.
Henne threw a pair of first-half touchdown passes and the game was tied 17-17 at the half.
Jaguars cornerback Aaron Ross left in the second quarter with an ankle injury. The team did not indicate which ankle and announced his return is questionable.