As discussed yesterday, there are always overperformers in the NHL.

Every year, someone scores more goals than they normally do, seemingly out of nowhere, and it's important to contextualize and understand the how and why of that overperformance. The same is true of guys who have disappointing seasons.

There may be any number of reasons why guys just can't convert their scoring chances at the rates we're used to seeing, or otherwise fall short of expectations relative to what they should have scored.

And as with overperformance, you can look at guys who don't deliver to the extent you might think if you compare expected-goal totals in all situations against the number of goals they actually scored. Expected-goals numbers are based on how many goals a historically average player would have scored if they took the exact same set of shots a given skater did.