ST. LOUIS -- Jacksonville rookie offensive tackle Luke Joeckel will miss the rest of the season because of a broken right ankle.
Joeckel was injured in the first quarter of a 34-20 loss to the Rams on Sunday. He was taken off the field on a cart.
Joeckel got his leg rolled up as he was blocking on a running play. He was selected by the Jaguars with the second pick in this year's draft.
"I saw it happen and it's unfortunate," said quarterback Blaine Gabbert, who also left the game with an injury. "It wasn't pretty."
Earlier this week, Jacksonville traded veteran left tackle Eugene Monroe to the Baltimore Ravens in exchange for multiple draft picks.
"You know what? Luke's a good player, but guys will step up," coach Gus Bradley said.
Gabbert strained his left hamstring in the third quarter. Playing in his hometown, he was 9 of 19 for 181 yards with one touchdown and two interceptions before leaving.
Jaguars tight end Allen Reisner left the game in the third quarter with a knee sprain.