Borom suffered an ankle injury in Thursday night's preseason win over the Chiefs, Scott Bair of the Bears' official site reports.
Coach Matt Eberflus said Borom will need further evaluation. In three seasons with the Bears, Borom has appeared in 39 games, making 23 starts, but the 2021 fifth-rounder is expected to handle swing tackle duties this season behind starters LT Braxton Jones and RT Darnell Wright.