When shooting and save percentages don't necessarily add up

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Elise Amendola / The Associated PressIn the hockey analytics world, one of the most popular statistics is PDO. It’s a confusing one, because usually those letters would stand for something, making it an acronym, but PDO was just the username of an Edmonton Oilers blogger who created the statistic.

The statistic is a team’s shooting percentage plus a team’s save percentage, and the expectation is that in a league with as much parity as the NHL has, most teams should see their shooting percentage and save percentage add up to 100 per cent, especially at even strength.

Of course, a great goaltender can inflate a team’s PDO, as can an exceptionally talented group of…