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Myankee4life
01-07-2006, 04:57 PM
Is Relative OPS a real stat?

I kno to get Rel. Ba its Ba/LgBa

Rel. Ob is OB/LgOB

Rel. Slg is Slg/LgSlg

so why not

Ops/LgOps

And if so is it a useful stat?

BoSox Rule
01-07-2006, 05:06 PM
OPS+ at www.baseball-reference.com

100 * (OBP / lg OBP + SLG / lgSLG -1)

100 is average

Myankee4life
01-07-2006, 05:30 PM
Ok so Rel. Ops is basically OPS+

And why the -1 in the equation?

Ubiquitous
01-08-2006, 11:46 AM
The minus one is because you are adding two numbers that are both based on a 100 point scale and then you wish to have a final number on a 100 point scale as well.

Each part of the equation is seperate and then added together. So a player who is 8% better then league average in OBP would have a rel OBP of 108 and if he was 15% better in SLG then he would have a 115. Add the two together and you get 223. Subtract 100 and you get 123. Now one thing to remember is that OPS+ is not a % stat. Meaning that player's OPS+ isn't 23% better then average, his components % when added come to 23% but that doesn't mean he is 23% betten then average.

For example let say the lg average is .300 in OBP and .400 in SLG, and player A has .350 and .450. His OPS is 14% better then average, but his components are 17% and 13% better respectively. SO his OPS+ would not be 114 but 129.

SABR Matt
01-08-2006, 11:57 AM
Doesn't the OPS+ used at baseball-reference also include a park adjustment when finding the league averages?

Ubiquitous
01-08-2006, 02:19 PM
Yes Bref does that