Tuesday, May 17, 2005

ERV Boxscore for May 17, vs. Milwaukee

Not pretty. Ohka the only positive on the evening. Note that this box score is a good lesson in Win Value, as most of the Nats WVs (including Ohka's) are near zero, because the game was not close -- the 2 runs scored in the ninth are worth only 0.02 WV, or 2 percent of the average "go-ahead" run.

ERV Win: Obermueller & Lee
ERV Loss: Vargas


ERV Boxscore for May 17, vs. Milwaukee

2 Comments:

At 11:03 PM, Blogger Chris Needham said...

It's strange that I was thinking in terms of WV when NJ hit the homer in the 9th!

Is win value based on final score? Or is it situational dependent?

That is, if NJ had hit his homer in the first, when it would've tied the game, would it affect his overall WV?

It's probably a basic question, but I'm tired and especially slow today!

Keep up the great work!

 
At 11:11 PM, Blogger DM said...

I think these are essentially the same question. I am hoping tonight to finally post on how Win Value works, but here's a quick answer to your questions.

WV is calculated at the time of the event, and does not change with post-facto events. If it is 6-0 in the third, like this game, the fact that the game might end up 6-6 in the 7th doesn't change the WV for those events back in the third. So K, Vargas's WV is the same regardless of what happens after he leaves, and yes, Chris, NJ would have a higher WV if he hit is HR in the first rather than the ninth.

And, yes, Obermueller picked the wrong game for WV-purposes. WV reflects performance when the game is close, when the "win" or "loss" is at stake.

 

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