Mark Williamson was 8-9 with an ERA of 4.03, 73 strikeouts and 3 saves in 61 appearances in his rookie season in 1987.

		NAME	SEASON	TM	G	W	L	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		Mark Williamson M. Williamson	1987	BAL	61	8	9	.471	2	4.03	73	0	0	3	125.0	122	56	59	12	41	3	36	15	520	3	5.26	2.95	1.78	0.86	14.0	7.9	1.30	.281	4.25	91	4.00	89	8.78	7

Games

	NAME	DATE	SEASON	TM		OPP	DEC	GS	ERA	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP
1	Mark Williamson M. Williamson	10/1/1987	1987	BAL	@	DET		0	4.91	3	0	0	0	3.2	4	2	2	1	1	0	1	1	15	0
2	Mark Williamson M. Williamson	9/29/1987	1987	BAL	@	DET		0	3.38	1	0	0	0	2.2	2	1	1	0	0	0	1	0	10	0
3	Mark Williamson M. Williamson	9/27/1987	1987	BAL	vs	NYY		0		0	0	0	0	0.0	0	0	0	0	0	0	0	0	1	0
4	Mark Williamson M. Williamson	9/25/1987	1987	BAL	vs	NYY		0	27.00	0	0	0	0	0.1	1	1	1	0	2	0	0	1	4	0
5	Mark Williamson M. Williamson	9/22/1987	1987	BAL	vs	TOR		0		0	0	0	0	0.0	2	2	2	0	0	0	0	0	2	0
6	Mark Williamson M. Williamson	9/21/1987	1987	BAL	vs	TOR		0	0.00	0	0	0	0	0.2	0	0	0	0	0	0	1	0	2	0
7	Mark Williamson M. Williamson	9/20/1987	1987	BAL	vs	BOS		0	0.00	0	0	0	0	1.0	2	0	0	0	0	0	1	0	5	0
8	Mark Williamson M. Williamson	9/15/1987	1987	BAL	@	TOR		0	0.00	3	0	0	0	4.0	1	0	0	0	2	0	1	1	14	0
9	Mark Williamson M. Williamson	9/10/1987	1987	BAL	@	BOS		0	6.75	0	0	0	0	1.1	2	1	1	0	1	0	0	0	7	0
10	Mark Williamson M. Williamson	9/7/1987	1987	BAL	vs	DET		0	4.50	1	0	0	0	2.0	2	1	1	0	0	0	0	0	8	0
11	Mark Williamson M. Williamson	9/6/1987	1987	BAL	vs	OAK		0		0	0	0	0	0.0	3	1	3	0	1	0	0	0	4	0
12	Mark Williamson M. Williamson	9/2/1987	1987	BAL	vs	SEA		0	0.00	1	0	0	0	3.0	0	0	0	0	0	0	0	0	9	0
13	Mark Williamson M. Williamson	8/31/1987	1987	BAL	vs	SEA		0	6.75	1	0	0	0	2.2	2	2	2	2	0	0	0	0	10	0
14	Mark Williamson M. Williamson	8/29/1987	1987	BAL	vs	CAL	L	0	4.50	2	0	0	0	2.0	3	1	1	0	1	0	0	0	10	0
15	Mark Williamson M. Williamson	8/28/1987	1987	BAL	vs	CAL	W	0	0.00	0	0	0	0	0.1	0	0	0	0	0	0	1	0	1	0
16	Mark Williamson M. Williamson	8/25/1987	1987	BAL	@	OAK		0	5.40	2	0	0	0	3.1	4	2	2	1	1	0	1	1	14	0
17	Mark Williamson M. Williamson	8/22/1987	1987	BAL	@	SEA		0	0.00	0	0	0	0	0.2	0	0	0	0	0	0	1	0	1	0
18	Mark Williamson M. Williamson	8/20/1987	1987	BAL	@	CAL	W	0	0.00	1	0	0	0	3.0	2	0	0	0	0	0	1	0	11	0
19	Mark Williamson M. Williamson	8/16/1987	1987	BAL	vs	MIL		0	9.00	1	0	0	0	2.0	3	2	2	0	2	0	1	1	11	1
20	Mark Williamson M. Williamson	8/11/1987	1987	BAL	vs	CLE		0	0.00	0	0	0	0	2.0	2	0	0	0	0	0	1	0	6	0
21	Mark Williamson M. Williamson	8/10/1987	1987	BAL	vs	CLE	W	0	0.00	0	0	0	0	1.2	2	0	0	0	0	0	0	0	6	0
22	Mark Williamson M. Williamson	8/7/1987	1987	BAL	vs	TEX		0	0.00	2	0	0	0	2.0	0	0	0	0	0	0	1	0	6	0
23	Mark Williamson M. Williamson	8/4/1987	1987	BAL	@	MIL	L	0	2.70	5	0	0	0	3.1	3	1	1	0	1	1	1	1	15	0
24	Mark Williamson M. Williamson	8/2/1987	1987	BAL	@	TEX		0	0.00	2	0	0	0	1.0	0	0	0	0	0	0	1	0	3	0
25	Mark Williamson M. Williamson	7/30/1987	1987	BAL	@	CLE	L	0	18.00	0	0	0	0	1.0	3	2	2	1	1	0	1	1	6	0
	Total							2	4.03	73	0	0	3	125.0	122	56	59	12	41	3	36	15	520	3