Career totals for player stats are WRONG
I noticed this because the link to Max Sherzer for an article about his 3000th K shows him at only 2784, despite including this season.
I suspect the reason is because the post-season stats, mixed in with regular season (bad idea!), are sometimes on the line BEFORE the regular season, but usually after, so that totaling every other line gives wrong answer for regular season totals. Embarrasing.