The Los Angeles Chargers took another hit on the offensive line Sunday when rookie tackle Joe Alt went down early in the Week 4 matchup against the New York Giants. Alt left the game in the first quarter with what high ankle sprain. Alt had an MRI Monday which confirmed the injury.
#Chargers LT Joe Alt, who was carted off, had X-Rays that were negative, source says. The initial diagnosis was a high-ankle sprain, but he’ll have an MRI to confirm. pic.twitter.com/cPubZhGm10
— Ian Rapoport (@RapSheet) September 28, 2025
The injury came on Los Angeles’ second offensive series when Giants pass rusher Kayvon Thibodeaux crashed into Alt’s right leg. The rookie could walk to the sideline before being carted back to the locker room for further evaluation.
Recovery timelines vary with high ankle sprains: mild cases can heal in a week or two, but more severe grades often sideline players for 4–8 weeks and, in the worst scenarios, may require surgery. With that, there is a chance Alt is placed on I.R.
In Alt’s absence, Austin Deculus stepped in at left tackle. The Chargers could stick with him moving forward, or explore the free agent market if Alt’s MRI confirms a long-term absence.
Alt's potential loss is a particularly tough blow given the team’s recent injuries up front. Rashawn Slater was already lost for the season with a torn patellar tendon, forcing Alt to move to left tackle. On top of that, starting right guard Mekhi Becton missed Sunday’s contest while in concussion protocol.
With multiple starters down, the Chargers’ offensive line depth will be tested as they try to keep Justin Herbert upright and maintain their hot start.
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