I think it's safe to say that Nick Schneider's 2015-16 season came as a surprise to a lot of people.
After being passed over in the 2015 NHL Draft, Schneider came into Calgary Flames rookie camp as an extra body. Then a few injuries here and there kept Schneider around long enough to impress Flames management to earn an entry-level contract.
He began the season in an NHL camp. He ended the season as the starting goalie of an American Hockey League team (at 18 years old). In between, he put together a pretty solid Western Hockey League season.