After 2018 free agency, here are some notable defensemen that have gained value as beneficiaries from offseason movement, coaching changes and injuries around the NHL. Ryan Pulock, D, NYI -- Most of the New York Islanders roster has taken a fantasy hit after elite center John Tavares signed a seven-year contract with the Toronto Maple Leafs, but the impact of new coach Barry Trotz could have a net-positive effect on the 23-year-old defenseman. Pulock was one of the lone bright spots for the Islanders amid their second-half struggles; they allowed the third most goals in the NHL and second most shots. Despite the Islanders' poor goal differential over their final 43 games (minus-28), Pulock managed to have 25 points (eight goals, 17 assists), seven on the power play (led Islanders defensemen) and was plus-8. The Islanders will play a more structured defensive system under Trotz, who won the Stanley Cup with the Washington Capitals last season, which should benefit Pulock at even strength. If Trotz uses Pulock over Nick Leddy on the first power-play unit, he would gain exposure to Calder Trophy winner Mathew Barzal and could return value as a fantasy sleeper.