More HBP

I was thinking about this again today and realized that maybe ISO would be a better stat to compare to HBP. ISO, or Isolated Power, is just Slugging percentage minus Batting Average. Slugging %, or SLG, is the total number of bases a batter hits -- one base for a single, two for a double, three for a triple, and so on -- divided by his at bats; so if you subtract a guy's batting average from his slugging percentage, you'll get a pretty good idea of how frequently his hits go for more than one base. It's a general measure of how hard guys are hitting the ball.

I also plotted this graph using a three-year linear moving average, to smooth out the curves and make the line a little less jumpy. Hopefully, that makes my point a little clearer, but mostly it's because I was bored.