he was TERRIBLE at throwing out runners, but everything else he did pretty well.

In fact, let me allow John Dewan to elucidate

http://www.billjamesonline.com/should_mike_piazza_be_in_the_hall_of_fame_/


Relevant swipe:

If it was true that Piazza was not a good defensive catcher, I would be OK with him not getting into the Hall on the first ballot. I still think the best hitting catcher of all time should be in the Hall, but having to wait a few years wouldn’t be so bad. But, all the statistical measures suggest otherwise. In fact, they suggest that Piazza was an above-average defensive catcher.

The one thing that Piazza did not do well defensively was throw out basestealers. He allowed a 76.8 percent stolen base percentage in his career. Other catchers who caught the same pitchers as Piazza threw out 64.5 percent. However, nabbing basestealers is only a part of a catcher’s defensive responsibility and only a small part of Piazza’s overall game. It would be like saying that the best hitting second baseman of all time, Rogers Hornsby, shouldn’t be in the Hall because he didn’t steal a lot of bases in his time.

The most important part of a catcher’s job is handling his pitchers and in this area Piazza was superb. Here is one of the most telling statistics. In his career behind the plate, pitchers had a 3.80 ERA when Piazza was catching. If you look at all the other catchers who caught the same pitchers in the same year that Piazza did, they allowed a 4.34 ERA. That’s a major difference, much more important than a few extra bases stolen. (In fact, Piazza’s catcher ERA of 3.81 includes the run value of any extra stolen bases he allowed.)

Craig Wright wrote an excellent article in The Hardball Times Baseball Annual 2009 called Piazza, Hall of Fame Catcher. He did a detailed sabermetric study that showed that hitters had a .723 OPS with Piazza behind the plate and a .748 OPS with other catchers. This 25-point differential is highly significant. In further studies that we did in The Fielding Bible—Volume II, we found that Piazza saved at least 20 to 70 runs more than an average catcher defensively, depending on the technique that we used."

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