Fantasy Baseball: 2009 xFIP Leaders and Some 2010 Sleepers

by Ray Guilfoyle on Dec 17, 2009 9:32 AM EST in Baseball Comment 2 comments

Recently, Fangraphs has teamed up with The Hardball Times to include the THT pitching stat called Expected Fielding Independent Pitching, or xFIP.
xFIP is Expected Fielding Independent Pitching. This is an experimental stat that adjusts and "normalizes" the home run component. Research has shown that home runs allowed are pretty much a function of flyballs allowed and home park, so xFIP is based on the average number of home runs allowed per outfield fly. <strong>Theoretically, this should be a better predicter of a pitcher's future ERA</strong>

With that said, here are the 2009 xFIP leaders:

Name	K/9	BB/9	K/BB	HR/9	WHIP	BABIP	LOB%	ERA	FIP	xFIP	E-X
Javier Vazquez	9.77	1.81	5.41	0.82	1.03	0.297	76.60%	2.87	2.77	2.82	0.05
Tim Lincecum	10.42	2.72	3.84	0.4	1.05	0.297	75.90%	2.48	2.34	2.87	-0.39
Roy Halladay	7.83	1.32	5.94	0.83	1.13	0.313	79.00%	2.79	3.06	3.05	-0.26
Dan Haren	8.75	1.49	5.87	1.06	1	0.28	77.00%	3.14	3.23	3.08	0.06
Jon Lester	9.96	2.83	3.52	0.89	1.23	0.323	76.90%	3.41	3.15	3.13	0.28
Zack Greinke	9.5	2	4.75	0.43	1.07	0.313	79.30%	2.16	2.33	3.15	-0.99
Justin Verlander	10.09	2.36	4.27	0.75	1.18	0.328	72.70%	3.45	2.8	3.26	0.19
Ricky Nolasco	9.49	2.14	4.43	1.12	1.25	0.336	61.00%	5.06	3.35	3.28	1.78
Josh Beckett	8.43	2.33	3.62	1.06	1.19	0.302	71.60%	3.86	3.63	3.35	0.51
Adam Wainwright	8.19	2.55	3.21	0.66	1.21	0.309	80.40%	2.63	3.11	3.36	-0.73

Here are some sleepers for 2010 based on the difference between their 2009 ERA and xFIP:

Name	K/9	BB/9	K/BB	HR/9	WHIP	BABIP	LOB%	ERA	FIP	xFIP	E-X
Ricky Nolasco	9.49	2.14	4.43	1.12	1.25	0.336	61.00%	5.06	3.35	3.28	1.78
Carl Pavano	6.64	1.76	3.77	1.17	1.37	0.335	66.10%	5.1	4	3.96	1.14
Livan Hernandez	5	3.28	1.52	0.93	1.56	0.326	67.30%	5.44	4.44	4.78	0.66
Cole Hamels	7.81	2	3.91	1.12	1.29	0.325	72.10%	4.32	3.72	3.69	0.63
Jorge de la Rosa	9.39	4.04	2.33	0.97	1.38	0.316	71.60%	4.38	3.91	3.76	0.62
Jason Hammel	6.78	2.14	3.17	0.87	1.39	0.337	69.50%	4.33	3.71	3.81	0.52
Mike Pelfrey	5.22	3.22	1.62	0.88	1.51	0.321	66.70%	5.03	4.39	4.52	0.51
Josh Beckett	8.43	2.33	3.62	1.06	1.19	0.302	71.60%	3.86	3.63	3.35	0.51
Derek Lowe	5.13	2.91	1.76	0.74	1.52	0.33	68.70%	4.67	4.06	4.19	0.48
Brett Anderson	7.7	2.31	3.33	1.03	1.28	0.317	67.00%	4.06	3.69	3.61	0.45

You can see there is a correlation between high BABIP, low LOB% and the E-X column. The E-X column takes the difference between the putcher's ERA and his xFIP. I have written about previously, how Ricky Nolasco could be a very undervalued pitcher come draft day 2010. I have him in the UBA league at $10, but risk losing him if I don't give him a raise. This table screams to give him a raise, but I am not so sure.

Poll

Should I give Nolasco a $5 raise in 2010?

no, his 2008 season could be the aberration.

8 votes

yes, hes a better pitcher than his 2009 numbers indicate. Remember the 16 K game?

50 votes

58 votes | Poll has closed

0 recs | Comment 2 comments |

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Comments

LOB%

Isn’t that Shandler’s Strand Rate? or close enough?

by faketeams on Dec 17, 2009 12:25 PM EST reply actions

yes

pretty much. Here is how it is defined at THT:
One of the statistics that Shandler invented and tracks is called “Strand Rate.” We have our own version of Strand Rate at THT, called LOB% (percent of baserunners left on base). Our formula differs a bit from Strand Rate; ours is (H+BB+HBP-R)/(H+BB+HBP-(1.4*HR)). Essentially, it’s the number of baserunners who didn’t score divided by the total number of baserunners (except those who scored on a home run). We exclude home runs from the base because we want to measure things a pitcher is less likely to control.

raygu

by Ray Guilfoyle on Dec 17, 2009 12:35 PM EST up reply actions

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