Robert Saleh is grateful the 49ers stuck with him through 2017 and 2018. If the numbers meant anything, they might not have 

Eric Hartline-Imagn Images It was a rocky first couple years for the 49ers defensive coordinator. Some fans may have wanted him gone.During the Kyle Shanahan era, the San Francisco 49ers have had two one-and-done defensive coordinators.Robert Saleh is grateful he’s not one of those defensive coordinators.The 49ers' defensive coordinator is grateful he didn’t suffer the same fate as Steve Wilks and Nick Sorensen: the 49ers ran out of patience. And there were times you thought they mig