It's not a perfect stat, but widely considered a step up from goals against average. Save percentage is simple math: Divide saves made by shots on goal when a goaltender is in the net (empty net goals don't count).
Save percentage doesn't account for screens by defensemen or opponents or both. It doesn't factor in a puck deflected off your own teammate's skate or leg or stick or you get the idea.
But what save percentage does indicate - for the most part, season in and season out - is whether teams are in playoff contention or not.
At the All-Star break, eight NHL teams were under .900 (90 percent) in save percentage: Only one, Edmonton, has a winning record and most fans know the Oilers have spiraled downward in recent months after a fast start. The rest of those teams, including the Kraken with an .878 save percentage, are not projected to make the postseason.
According to HockeyReference.com, the league average for save percentage this season is .909 to date, following seasons of .908, .910, .910, .912, showing the team save percentage notching above .900 can make or break playoff dreams. To wit, Pacific Division-leading Vegas has a .901 save percentage.
Grubauer and Chris Driedger have played strong games during the recent homestand (3-3 record) and road trip (2-2 with legitimate opportunity to sweep the trip). Turning in consistently higher - .900 or better - most nights in the remaining months will be a trend that will produce more victories.