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OPS: Begone!

May 20, 2003 - gd

Excellent work as always, tango.

It's just a trivial statistical nicety, but I noticed that the (OBP * x + SLG) equals about 1.0 for the range of x being discussed given the current league OBP/SLG figures. For example, in the 2002 AL, where the league OBP/SLG was .327/.424, 1.76 * OBP + SLG = 1.000. For Soriano his .332/.547 = 1.125. For Posada his .370/.468 = 1.119. From 98-03, the AL values are been 1.69, 1.63, 1.61, 1.74, 1.76, and 1.70. The 98-03 NL values 1.80, 1.68, 1.68, 1.76, 1.80, and 1.74.

I know adj-OPS+ is appreciated for the convenience of the scale, but since it provides inaccurate assessments of value, it's nice to know that OPS * (1.6 - 1.8) + SLG not only is more accurate but basically gives you a league (though not park) adjusted measure.


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