Roger Clemens had a record of 12-8 with an ERA of 3.75 and 173 strikeouts in 35 appearances in the postseason in his career.

	NAME	SEASON	TM	G	W	L	W%	GS	ERA	SO	CG	SHO	IP	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	H/9
1	Roger Clemens R. Clemens	1986	BOS	5	1	1	.500	5	3.97	28	0	0	34.0	31	15	17	1	13	2	0	0	146	0	7.41	3.44	2.15	0.26	19.2	8.9	1.29	.294	4.50	8.21
2	Roger Clemens R. Clemens	1988	BOS	1	0	0		1	3.86	8	0	0	7.0	6	3	3	1	0	0	0	0	26	1	10.29	0.00		1.29	30.8	0.0	0.86	.294	3.86	7.71
3	Roger Clemens R. Clemens	1990	BOS	2	0	1	.000	2	3.52	4	0	0	7.2	7	3	3	0	5	0	0	0	32	1	4.70	5.87	0.80	0.00	12.5	15.6	1.57	.304	3.52	8.22
4	Roger Clemens R. Clemens	1995	BOS	1	0	0		1	3.86	5	0	0	7.0	5	3	3	0	1	0	0	0	27	0	6.43	1.29	5.00	0.00	18.5	3.7	0.86	.238	3.86	6.43
5	Roger Clemens R. Clemens	1999	NYY	3	2	1	.667	3	3.24	8	0	0	16.2	13	6	6	1	6	0	0	0	69	0	4.32	3.24	1.33	0.54	11.6	8.7	1.14	.222	3.24	7.02
6	Roger Clemens R. Clemens	2000	NYY	4	2	2	.500	4	3.21	34	1	1	28.0	16	10	10	1	10	1	0	1	110	2	10.93	3.21	3.40	0.32	30.9	9.1	0.93	.234	3.21	5.14
7	Roger Clemens R. Clemens	2001	NYY	5	1	1	.500	5	2.36	32	0	0	26.2	20	7	7	1	12	3	0	0	116	2	10.80	4.05	2.67	0.34	27.6	10.3	1.20	.279	2.36	6.75
8	Roger Clemens R. Clemens	2002	NYY	1	0	0		1	6.35	5	0	0	5.2	8	4	4	1	3	0	0	0	27	0	7.94	4.76	1.67	1.59	18.5	11.1	1.94	.389	6.35	12.71
9	Roger Clemens R. Clemens	2003	NYY	4	2	0	1.000	4	3.52	19	0	0	23.0	24	9	10	4	3	0	0	0	95	0	7.43	1.17	6.33	1.57	20.0	3.2	1.17	.290	3.91	9.39
10	Roger Clemens R. Clemens	2004	HOU	4	2	1	.667	4	3.60	21	0	0	25.0	22	10	11	4	10	0	0	0	105	4	7.56	3.60	2.10	1.44	20.0	9.5	1.28	.257	3.96	7.92
11	Roger Clemens R. Clemens	2005	HOU	4	2	1	.667	3	5.63	8	0	0	16.0	17	10	10	2	5	0	1	0	71	0	4.50	2.81	1.60	1.13	11.3	7.0	1.38	.268	5.63	9.56
12	Roger Clemens R. Clemens	2007	NYY	1	0	0		1	11.57	1	0	0	2.1	4	3	3	1	2	0	0	0	13	0	3.86	7.71	0.50	3.86	7.7	15.4	2.57	.333	11.57	15.43
	Total			35	12	8	.600	34	3.75	173	1	1	199.0	173	83	87	17	70	6	1	1	837	10	7.82	3.17	2.47	0.77	20.7	8.4	1.22	.273	3.93	7.82