Kyle Shanahan’s overhauled coaching staff features new coordinators and others as the 49ers look to rebound from a 6-11, last-place season.

SANTA CLARA — Season No. 9 for 49ers coach Kyle Shanahan comes with his staff’s most significant overhaul. New coordinators are in place: Robert Saleh returns to the defense after three-plus ...

Find out Kyle Shanahan's salary, coaching record, about his wife, and why he is regarded as one of the best head coaches in the NFL.

In one significant way, having the full offseason to work with has already been beneficial for the Niners. When Shanahan decided to fire Nick Sorensen and seek a fourth defensive coordinator in as many seasons, he quickly pointed out that such a move might not have made as much sense if the 49ers had played deep into January or February.

The San Francisco 49ers brought back Robert Saleh to lead a defense that will have its fourth defensive coordinator in four seasons.

The offseason chess match between NFL head coaches is well underway, and for Kyle Shanahan, it's turning into a high-stakes battle. With a secondary that is beginning to show weakn