Richardson, who spent three seasons as an assistant at the NHL level, led the Binghamton Senators to a fourth-place finish in the Eastern Conference last year. Binghamton went 44-24-1-7 before being swept out of the playoffs in the first round.
The 44-year-old jumped almost immediately from his career as a defenceman to life in coaching. He played 1,417 games over 20 seasons before retiring in November 2008.
Assistants Steve Stirling and Matt Meacham also received one-year extensions.
You don't see many. The [Drew] Doughtys, the [P.K.] Subbans, those are guys that create offense from the back and then on top of that ability, the size that he has. In the West you play against some pretty big players, and being able to clear the crease and contain the [Ryan] Getzlafs and the [Corey] Perrys and [Anze] Kopitars and players like that, we're excited about him going back there.
— Sharks general manager Doug Wilson on Brent Burns returning back to defense