Arch Manning's official injury diagnosis revealed

Texas announced that Manning is officially in concussion protocol today.

Matthew Wilson

Texas v Mississippi State / Justin Ford/GettyImages

The Longhorns officially announced that Arch Manning suffered a concussion against the Mississippi State Bulldogs, and that he missed practice today due to being in protocol.

Depending on the severity of the concussion, which hasn't been disclosed yet, it can take anywhere from 7-14 days to recover. That makes his availability for at least week 10's matchup against Vanderbilt in serious doubt.

BREAKING: Texas QB Arch Manning is Currently in Concussion Protocol and Did Not Practice on Monday. pic.twitter.com/zkq8TjPX7w
— Orangebloods.com (@orangebloods_) October 27, 2025

As we saw after his injury on Saturday night, Troy transfer QB Matthew Caldwell was the next man up and will most likely be the starting quarterback against the Commodores this weekend at home.

Matthew Wilson

Matt is FanSided’s Site Expert at Hook’em Headlines, leading the coverage for all Texas Longhorn sports. He has previously written for OnSI and SBNation.com, where he covered the NFL. He’s been covering professional football and the NFL Draft for over five years, specifically from an analytics standpoint. His work has been referenced or featured on major sports platforms such as Bleacher Report and Yahoo Sports. In his free time, Matt likes to fish, break down game film, and have fun with his family.