Nothing beats Jacques Richard in 1980-81.
The NHL has so many awards that they should have created the 'NHL Jacques Richard Outlier Award'.
Even some of the other big time outlier seasons had decent follow up in their next best year. His career highs outside that year: 27 goals, 48 points! Not even a 50 POINT season save for that outlier.
Even Rob Brown, another notable one year wonder, had a comparatively better 33 goals and 80 points in 1989-90
Cheechoo had 28 and 37 goal years sandwiched around the 56 goal season.
Juneau's 100 point season in 1992-93? 85 points in 1993-94.
Gary Leeman had 30 and 32 goal seasons before his 51 goal explosion of 1989-90, so you could say he was progressing.
Al Secord's 50 goal season? Sandwiched by a pair of 40 goal seasons.
Jim Carey? Vezina finalist and Calder runner-up the year BEFORE his Vezina win.
Glen Murray already had a 41 goal season the year before his 92 point year.
There are a lot of outlier season, but the 2nd best season for a lot of these guys are a lot better than Jacques Richard.