It’s kindergarten-level math, really: put more pucks in the net than your opponent and you win the game. It doesn’t matter if the final tally is 2-1 or 8-1 or 5-4, they’re all worth two points in the standings.
Once you understand the basic arithmetic (remember, the “greater than” sign is an alligator’s open mouth chomping the bigger number!), it’s easier to understand how a goalie with a save percentage below .900 and a goals against average approaching three can post a sparkling 11-3-1 record.
Assuming you have deductive reasoning and reading comprehension skills commensurate with those kindergarten math chops, you’ve correctly surmised that the goalie in question is Ilya Samsonov, who has had an up-and-down (mostly down, if we’re being honest) sophomore season in the Caps net after an impressive start to his career.