Rodrigo Lopez lost the most games in 2006, with 18 games.

	NAME	L	SEASON	TM	W	L%	G	W%	GS	ERA	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Rodrigo Lopez R. Lopez	18	2006	BAL	9	.667	36	.333	29	5.90	136	0	0	0	189.0	234	124	129	32	59	4	2	2	847	6	6.48	2.81	2.31	1.52	16.1	7.0	1.55	.328	6.14	128	4.90	105	11.14	-4.9
2	Jason Marquis J. Marquis	16	2006	STL	14	.533	33	.467	33	6.02	96	0	0	0	194.1	221	130	136	35	75	16	0	2	870	2	4.45	3.47	1.28	1.62	11.0	8.6	1.52	.287	6.30	138	5.90	133	10.23	-32.4
3	Ramon Ortiz R. Ortiz	16	2006	WSH	11	.593	33	.407	33	5.57	104	0	0	0	190.2	230	118	127	31	64	18	0	14	871	4	4.91	3.02	1.63	1.46	11.9	7.3	1.54	.304	5.99	129	5.45	124	10.86	-23.5
4	Aaron Cook A. Cook	15	2006	COL	9	.625	32	.375	32	4.23	92	0	0	0	212.2	242	100	107	17	55	7	0	11	915	2	3.89	2.33	1.67	0.72	10.1	6.0	1.40	.302	4.53	87	4.19	89	10.24	12.1
5	Zach Duke Z. Duke	15	2006	PIT	10	.600	34	.400	34	4.47	117	2	1	0	215.1	255	107	116	17	68	7	0	6	935	8	4.89	2.84	1.72	0.71	12.5	7.3	1.50	.328	4.85	102	4.12	93	10.66	7.4
6	Mark Hendrickson M. Hendrickson	15	2006	TOT	6	.714	31	.286	25	4.21	99	1	1	0	164.2	173	77	87	17	62	4	0	0	719	6	5.41	3.39	1.60	0.93	13.8	8.6	1.43	.291	4.76	95	4.48	100	9.46	0.3
7	Matt Morris M. Morris	15	2006	SFG	10	.600	33	.400	33	4.98	117	2	0	0	207.2	218	115	123	22	63	14	0	9	903	1	5.07	2.73	1.86	0.95	13.0	7.0	1.35	.285	5.33	110	4.50	102	9.45	-1.8
8	Carlos Silva C. Silva	15	2006	MIN	11	.577	36	.423	31	5.94	70	0	0	0	180.1	246	119	130	38	32	7	2	4	811	1	3.49	1.60	2.19	1.90	8.6	3.9	1.54	.313	6.49	133	5.75	131	12.28	-28.6
9	Kelvim Escobar K. Escobar	14	2006	LAA	11	.560	30	.440	30	3.61	147	1	0	0	189.1	192	76	93	17	50	4	0	2	789	7	6.99	2.38	2.94	0.81	18.6	6.3	1.28	.306	4.42	80	3.61	81	9.13	18.2
10	Felix Hernandez F. Hernandez	14	2006	SEA	12	.538	31	.462	31	4.52	176	2	1	0	191.0	195	96	105	23	60	6	0	2	816	11	8.29	2.83	2.93	1.08	21.6	7.4	1.34	.312	4.95	103	3.90	88	9.19	11.2
11	Greg Maddux G. Maddux	14	2006	TOT	15	.483	34	.517	34	4.20	117	0	0	0	210.0	219	98	109	20	37	0	0	7	862	0	5.01	1.59	3.16	0.86	13.6	4.3	1.22	.289	4.67	92	3.79	83	9.39	18
12	Jamie Moyer J. Moyer	14	2006	TOT	11	.560	33	.440	33	4.30	108	2	1	0	211.1	228	101	110	33	51	5	0	5	894	3	4.60	2.17	2.12	1.41	12.1	5.7	1.32	.280	4.68	97	4.94	110	9.71	-11.1
13	Jake Peavy J. Peavy	14	2006	SDP	11	.560	32	.440	32	4.09	215	2	0	0	202.1	187	92	93	23	62	6	0	11	846	4	9.56	2.76	3.47	1.02	25.4	7.3	1.23	.304	4.14	99	3.50	81	8.32	19.4
14	Jarrod Washburn J. Washburn	14	2006	SEA	8	.636	31	.364	31	4.67	103	0	0	0	187.0	198	97	103	25	55	7	0	2	809	3	4.96	2.65	1.87	1.20	12.7	6.8	1.35	.279	4.96	107	4.77	108	9.53	-7.5
15	Jeff Weaver J. Weaver	14	2006	TOT	8	.636	31	.364	31	5.76	107	0	0	0	172.0	213	110	117	34	47	10	0	1	770	5	5.60	2.46	2.28	1.78	13.9	6.1	1.51	.313	6.12	130	5.46	123	11.15	-19.7
16	Mark Buehrle M. Buehrle	13	2006	CWS	12	.520	32	.480	32	4.99	98	1	0	0	204.0	247	113	124	36	48	6	0	5	876	0	4.32	2.12	2.04	1.59	11.2	5.5	1.45	.307	5.47	105	5.27	111	10.90	-11
17	Dan Haren D. Haren	13	2006	OAK	14	.481	34	.519	34	4.12	176	2	0	0	223.0	224	102	109	31	45	10	0	6	930	10	7.10	1.82	3.91	1.25	18.9	4.8	1.21	.289	4.40	92	4.11	91	9.04	10.1
18	Livan Hernandez L. Hernandez	13	2006	TOT	13	.500	34	.500	34	4.83	128	0	0	0	216.0	246	116	125	29	78	4	0	6	959	1	5.33	3.25	1.64	1.21	13.3	8.1	1.50	.301	5.21	110	4.84	108	10.25	-9.1
19	Jason Jennings J. Jennings	13	2006	COL	9	.591	32	.409	32	3.78	142	3	2	0	212.0	206	89	94	17	85	3	0	7	902	10	6.03	3.61	1.67	0.72	15.7	9.4	1.37	.289	3.99	77	4.09	87	8.75	14.3
20	Ted Lilly T. Lilly	13	2006	TOR	15	.464	32	.536	32	4.31	160	0	0	0	181.2	179	87	98	28	81	4	0	6	797	7	7.93	4.01	1.98	1.39	20.1	10.2	1.43	.288	4.86	94	4.79	105	8.87	-4.4
21	Oliver Perez O. Perez	13	2006	TOT	3	.813	22	.188	22	6.55	102	1	1	0	112.2	129	82	90	20	68	6	0	0	529	5	8.15	5.43	1.50	1.60	19.3	12.9	1.75	.327	7.19	149	5.61	126	10.30	-14.9
22	Andy Pettitte A. Pettitte	13	2006	HOU	14	.481	36	.519	35	4.20	178	2	1	0	214.1	238	100	114	27	70	2	1	9	929	2	7.47	2.94	2.54	1.13	19.2	7.5	1.44	.324	4.79	95	4.12	90	9.99	10.6
23	Joel Pineiro J. Pineiro	13	2006	SEA	8	.619	40	.381	25	6.36	87	1	0	1	165.2	209	117	123	23	64	10	6	13	753	4	4.73	3.48	1.36	1.25	11.6	8.5	1.65	.327	6.68	145	5.23	118	11.35	-15.4
24	Nate Robertson N. Robertson	13	2006	DET	13	.500	32	.500	32	3.84	137	1	0	0	208.2	206	89	98	29	67	8	0	2	881	6	5.91	2.89	2.04	1.25	15.6	7.6	1.31	.277	4.23	84	4.71	104	8.88	-4.6
25	Tony Armas T. Armas	12	2006	WSH	9	.571	30	.429	30	5.03	97	0	0	0	154.0	167	86	96	19	64	13	0	7	693	6	5.67	3.74	1.52	1.11	14.0	9.2	1.50	.296	5.61	117	4.98	114	9.76	-10.7