If there's anybody on the Islanders who did not do anything this season worthy of the "Minus" category, it's Sorokin.
However, the biggest problem for him in his third season in the NHL was getting overworked, specifically in March as the Isles' playoff push was in full swing. Semyon Varlamov, with Sorokin, create arguably one of the best goaltending tandems in the NHL, only played two games in March, losing both games. He did not start a single game in April either, only coming off the bench in relief during a 5-0 loss against the Tampa Bay Lightning.
The Islanders did what they had to do to get into the playoffs, which Sorokin was a big part of, but that is when the fatigue showed the most. Sorokin played well in the games that the Islanders won - but in both games two and four of the series against the Canes, he let up two goals in overtime that a non-fatigued Sorokin probably does not give up, one to Jesper Fast and the series-winner to Paul Stastny. This was one of the few reasons the Islanders lost the series, but considering how the rest of the team played all series long, it's hard to pin it solely on him.
The only thing Sorokin could have asked more of last season was coming away with his first-ever Vezina Trophy, which would have been the first Islanders winner since Billy Smith in 1982-83. Luckily for Isles fans, they can expect this elite quality of play in goal for years to come.