SAN FRANCISCO — 49ers assistant head coach Chris Foerster oversaw his first full practice Monday, bringing a noticeable energy to the field. Head coach Kyle Shanahan observed nearby, a clear endorsement of Foerster's expanded role.

Foerster's presence marks a significant step in his return to the NFL. He previously served as the 49ers' offensive line coach in 2015-16 before leaving the league in 2017 due to substance abuse issues.

His path back began quietly. Foerster rejoined San Francisco in 2021 as a consultant, then returned as offensive line coach before his recent promotion to assistant head coach — a role that makes him a key bridge between Shanahan and the entire staff.

The results since his return have been tangible. The 49ers consistently rank among the league's top rushing teams, a direct reflection of his unit's development and cohesion.

Left tackle Trent Williams, a perennial All-Pro, has publicly credited Foerster with enhancing his game. That offensive line is the engine behind San Francisco's run-heavy identity, and Foerster built it.

Promoting him carries real risk given his past. The 49ers have stood by him publicly, betting his recovery and coaching ability outweigh any public relations exposure. So far, that bet is paying off.

The 49ers finished last season 13-4 before falling in the NFC Championship Game. Coaching depth matters when you're one game from the Super Bowl, and Foerster's elevation gives Shanahan a trusted lieutenant who has earned it on the field.