49ers hope Saleh’s energy is what the doctor ordered for defense

By bringing back Robert Saleh as their defensive coordinator, the 49ers are getting more than a coach. They also are beneficiaries of his infinite energy.The 49ers' defense has struggled over the past two seasons, even on the way to a Super Bowl LVIII appearance with Steve Wilks as the coordinator in 2023 — so much so that the veteran coach was relieved of his responsibilities after one season.Kyle Shanahan promoted Nick Sorensen as Wilks' replacement, but the results weren't much better as the 49ers finished with a 6-11 record in 2024. Wilks and Sorensen, who remained in the position for one season each, have decidedly different sideline behaviors than Saleh. Both former coordinators could described as "reserved" during games.Even after Saleh was named head coach of the New York Jets following the 2020 season, his passion was carried on by DeMeco Ryans, who held the defensive coordinator role for the 49ers from 2021-2022 before being named head coach of the Houston Texans ahead of the 2023 NFL season.Saleh and Ryans are known for their ebullient antics when their defense makes big plays. While their energy doesn't guarantee wins, by any means, it does seem to permeate...