 He would rebound to have an improved year in 1988–89, registering 4 goals and 17 points in 66 games for the Whalers while anchoring the top penalty-kill unit alongside Dave Tippett.However, at the conclusion of the season he announced his retirement to accept a coaching position with the Whalers.Peterson finished his NHL career with totals of 72 goals and 141 assists for 213 points in 620 games, along with 484 penalty minutes.