All-time turkeys (The worst individual seasons in baseball history)

Whether or not you're celebrating Thanksgiving today, here's a little turkey for you--some of the worst performances in baseball history.
Worst WAR among position players:

Rk	Player	WAR/pos	Year	Age	Tm	G	PA	AB	R	H	2B	3B	HR	RBI	BA	OBP	SLG	OPS	Pos
1	George Wright	-4.0	1985	26	TEX	109	393	363	21	69	13	0	2	18	.190	.241	.242	.483	*98/D
2	Jerry Royster	-4.0	1977	24	ATL	140	491	445	64	96	10	2	6	28	.216	.278	.288	.566	564/8
3	Brian Giles	-3.9	2009	38	SDP	61	253	225	18	43	10	1	2	23	.191	.277	.271	.548	*9
4	Jim Levey	-3.8	1933	26	SLB	141	567	529	43	103	10	4	2	36	.195	.237	.240	.477	*6
5	Jose Guillen	-3.5	1997	21	PIT	143	526	498	58	133	20	5	14	70	.267	.300	.412	.712	*9/8

Provided by Baseball-Reference.com: View Play Index Tool Used
Generated 11/19/2011.

Royster, Giles, Levey, and Guillen all had at least -1.0 WAR on defense, meaning that as far as pure offense seasons go, Wright takes the cake.

Worst WAR among pitchers:

Rk	Player	WAR	Year	Age	Tm	G	GS	CG	SHO	GF	W	L	W-L%	IP	H	R	ER	BB	SO	ERA	ERA+
1	Steve Blass	-5.8	1973	31	PIT	23	18	1	0	1	3	9	.250	88.2	109	98	97	84	27	9.85	36
2	Tom Fisher	-5.4	1904	23	BSN	31	21	19	2	9	6	16	.273	214.0	257	165	101	82	84	4.25	65
3	Bill Bailey	-5.1	1910	22	SLB	34	20	13	0	9	3	18	.143	192.1	186	133	71	97	90	3.32	74
4	Gene Wright	-4.9	1903	24	TOT	23	20	15	1	3	6	15	.286	162.2	195	123	90	74	79	4.98	58
5	Andy Larkin	-4.6	1998	24	FLA	17	14	0	0	0	3	8	.273	74.2	101	87	80	55	43	9.64	42

Provided by Baseball-Reference.com: View Play Index Tool Used
Generated 11/19/2011.

I feel like Steve Blass should get a pass on this and not have to be here, but that 84/27 BB/K ratio is too staggering to ignore.

Worst WPA (Win Probability Added) among batters since 1950:

Rk	Player	WPA	Year	Age	Tm	G	PA	AB	R	H	2B	3B	HR	RBI	BB	SO	BA	OBP	SLG	OPS	Pos
1	Neifi Perez	-6.819	2002	29	KCR	145	585	554	65	131	20	4	3	37	20	53	.236	.260	.303	.564	*6/4
2	Sam Dente	-5.181	1950	28	WSH	155	654	603	56	144	20	5	2	59	39	19	.239	.286	.299	.585	*64
3	George Wright	-5.053	1985	26	TEX	109	393	363	21	69	13	0	2	18	25	49	.190	.241	.242	.483	*98/D
4	Gary Disarcina	-5.051	1997	29	ANA	154	583	549	52	135	28	2	4	47	17	29	.246	.271	.326	.597	*6
5	Alcides Escobar	-4.810	2011	24	KCR	158	598	548	69	139	21	8	4	46	25	73	.254	.290	.343	.633	*6

Provided by Baseball-Reference.com: View Play Index Tool Used
Generated 11/19/2011.

Oh God, that Neifi Perez season makes me want to gouge my eyes out. In a partial season with KC in 2001 he posted a 49 OPS+ and amazing he went even lower, 44, in a full season in 2002. Of course, that KC team was just horrible, and I blame management more than anything for giving Perez a full season.

Most games in a season since 1991 with at least 3 plate appearances an no times on base:

Rk	Player	Year	#Matching		PA	AB	H	2B	3B	HR	RBI	BB	TOBwe	SO
1	Alex Gonzalez	2004	49	Ind. Games	180	178	0	0	0	0	2	0	0	50
2	Sammy Sosa	1993	47	Ind. Games	184	184	0	0	0	0	0	0	0	52
3	Miguel Olivo	2011	46	Ind. Games	184	180	0	0	0	0	4	0	0	73
4	Gary Disarcina	1992	46	Ind. Games	150	146	0	0	0	0	2	0	0	18
5	Yuniesky Betancourt	2009	46	Ind. Games	170	161	0	0	0	0	9	0	0	17

Provided by Baseball-Reference.com: View Play Index Tool Used
Generated 11/20/2011.

Other players including Aurelio Rodriguez had more in earlier years.

Most starts in a season of less than 5 innings pitched:

Rk	Player	Year	#Matching		W	L	W-L%	ERA	IP	H	ER	HR	BB	SO	WHIP
1	John O'Donoghue	1964	16	Ind. Games	0	12	.000	11.68	47.0	86	61	11	33	24	2.53
2	Pat Caraway	1931	15	Ind. Games	0	15	.000	21.55	33.0	88	79	6	33	7	3.67
3	Ken Schrom	1987	14	Ind. Games	0	11	.000	13.61	39.2	86	60	15	22	18	2.72
4	Pete Redfern	1977	14	Ind. Games	0	4	.000	8.40	45.0	72	42	6	33	18	2.33
5	Dennis Lamp	1980	14	Ind. Games	0	7	.000	10.80	46.2	94	56	4	36	20	2.79
6	Sean Bergman	1995	14	Ind. Games	0	8	.000	11.42	43.1	80	55	14	40	20	2.77

Provided by Baseball-Reference.com: View Play Index Tool Used
Generated 11/20/2011.

Most losses in relief:

Rk	Player	Year	#Matching		L	ERA	IP	H	ER	HR	BB	SO	WHIP
1	Gene Garber	1979	16	Ind. Games	16	9.59	25.1	50	27	7	7	16	2.25
2	Mike Marshall	1979	14	Ind. Games	14	6.30	30.0	38	21	5	13	25	1.70
3	Mike Marshall	1975	14	Ind. Games	14	10.73	24.1	40	29	4	14	15	2.22
4	Darold Knowles	1970	14	Ind. Games	14	5.47	24.2	33	15	3	17	13	2.03
5	John Hiller	1974	14	Ind. Games	14	5.17	38.1	49	22	2	27	29	1.98

Provided by Baseball-Reference.com: View Play Index Tool Used
Generated 11/20/2011.

Now that you've filled up on that turkey, why not have some sweet potato pie?