Who's Contributing The Most To The H/A Splits?

by phils11 on Jun 21, 2009 3:57 PM EDT Comment 0 comments

The splits are ugly. Everyone's heard about that.

Using home/road splits for sOPS+, we can see who's contributing the most to the difference:

What is sOPS+?

OPS you more than likely are familiar with.

OPS+ is normalized, so an OPS+ of 100 is average, over 100 for batters is better than average and vice versa. (For pitchers, it's reversed)

sOPS+ is how a performance is compared to the league average for a particular split.

The sample sizes range from small to very small, so this is not evidence that player A and B should be platooned home/away or Madson should close at home / Lidge on the road. Just some stuff i found interesting.

Here are our regulars, in decreasing order of the % difference in sOPS+ from Away to Home. For clarity, a positive percentage is better on the road than home, and a negative is better at home than on the road.

Player	Home sOPS+	Away sOPS+	% Diff sOPS+
Jayson Werth	90	142	36.62%
Chase Utley	136	191	28.80%
Ryan Howard	115	153	24.84%
Shane Victorino	103	135	23.70%
Jimmy Rollins	56	68	17.65%
Raul Ibanez	164	174	5.75%
Pedro Feliz	99	105	5.71%
Carlos Ruiz	140	97	-30.71%

And here is our pitching staff, sorted in the same way, also with home and away BABIP:

Pitcher	Home sOPS+	Away sOPS+	% Diff sOPS+	Home BABIP	Away BABIP
Ryan Madson	128	-1	100.78%	0.362	0.217
J.A. Happ	130	64	50.77%	0.286	0.211
Antonio Bastardo	117	71	39.32%	0.28	0.303
Joe Blanton	142	87	38.73%	0.336	0.288
Jamie Moyer	151	130	13.91%	0.3	0.355
Brett Myers*	136	123	9.56%	0.298	0.231
Brad Lidge	158	154	2.53%	0.333	0.371
Cole Hamels	110	130	-18.18%	0.333	0.364