As far as Mauer is concerned, I would have been much more satisfied with him as a hitter if more of his hits were extra base hits. HIs ISO has been pathetic for years. Let's just tell it like it is. He also has a penchant for keeping the bat on his shoulders when runners are on base or when it's a tight game. You'd want your franchise player to take a crack at it in those situations, but it's just not his thing. This the reason why we didn't see Mauer get a walk off hit (not home run) for ten seasons until he got one this past season. Coupled with his dreadful ISO his walk obsession has helped ensure that he won't be making much of an impact on a game with his bat. Don't believe me? If you're like me you have watched almost every one of the games he has played in, but if that isn't enough to tell you go look at his splits from last year: https://www.baseball-reference.com/players/split.fcgi?id=mauerjo01&year=2017&t=b In close and late situations he had 79 plate appearances and 19 walks. With a margin of 4 runs or greater he had 81 plate appearances and 9 walks. If you think that is a statistical anomaly then go look at the same numbers for 2016, 2015, 2014..... Also take a look at his numbers with men on base compared to no one on base. It is the same thing. Way WAY more likely to walk with runners on than with runners not on base. Does this approach make sense?