A few years back we wrote an article on the importance of evaluating how teams hit left-handed and right-handed pitchers. In summary, we surmised it was important, yet keeping in perspective, we demonstrated how the numbers can be greatly affected by random chance. Hence we warned about becoming too dependant on deceptive statistics that are so often fools gold.
We have very similar thoughts about comparing ballpark statistics. There are some stadiums that could be classified as “pitchers ballparks” while others could reasonably be labeled more friendly to hitters.
Yet again, we have to give props to the four-letter evil empire ESPN. In their fantasy baseball section, they have a straight-forward “Park Factor” that compares that rate of stats at home versus the rate of stats on the road. A rate that is higher than 1.000 favors the hitter, with lower than 1.000 favoring the pitcher.
Still, statistical reliability would assume the quality of the opponent has been equal at home and on the road. Random chance indicates some teams will face or use a disproportionate number of aces and No. 2 starters in one location. This deviation...