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THE BOOK--Playing The Percentages In Baseball

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Tuesday, August 05, 2008

Is this player having a sub-par year with the bat (and the problem with OPS or OPS+)?

By , 12:32 AM

Here is my formula I use for offensive lwts after park and opponent (the pool of pitchers)-adjusting a player’s stats.  Also, I remove all IBB and sac bunt attempts (which include some singles, some outs, some official sacrifice bunts, etc.).

lwts=.48*(ts-ifs) + .4* ifs +.77*d+1.07*t + 1.40*hr+.32*(bb+hbp) + .51*roe - outval*(outs)

ts=total singles.  ifs=infield singles.

Outval is determined by summing the entire league’s lwts to zero AND using these normalized values for a K, a fly out, and a ground out:

For RHB
so=.288
fly out=.274
ground out =.308

For LHB
so=.288
fly out=.274
ground out =.288

For SHB
so=.288
fly out=.274
ground out =.295

These are per 630 PA (around 150 games for a player in a random slot in a lineup)

2004 18.9
2005 -.5
2006 47.6
2007 17.8
2008 18.0

The player is 31 years old, BTW.

He is being accused of having a poor year offensively, and not just based on traditional garbage stats.

Do you know who he is?

Do you know why he is being accused of having a poor year offensively?

(10) Comments • 2008/08/06
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August 05, 2008
Is this player having a sub-par year with the bat (and the problem with OPS or OPS+)?