Robert Saleh once again is tasked with reviving the San Francisco defense following a rough season when the Niners struggled to slow down opposing offenses. The main difference this time when Saleh returns for a second stint as Niners defensive coordinator following an unsuccessful run as head coach of the New York Jets is the talent that he inherits.

Saleh was the 49ers' defensive coordinator in 2017 and 2018. San Francisco's defense struggled in both years, finishing 25th and then 28th in scoring. But the 49ers enjoyed a vast improvement in 2019 (No. 8) en route to the NFC title.