Sonny Siebert was 7-9 with an ERA of 3.23, 144 strikeouts and 3 saves in 41 appearances in his rookie season in 1964.

		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		Sonny Siebert S. Siebert	1964	CLE	41	7	9	.438	14	3.23	144	3	1	3	156.0	142	56	61	15	57	2	10	4	653	6	8.31	3.29	2.53	0.87	22.1	8.7	1.28	.292	3.52	90	3.14	84	8.19	10.2

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	Sonny Siebert S. Siebert	10/4/1964	1964	CLE	@	NYY		0	0.00	3	0	0	0	3.0	1	0	0	0	0	0	0	0	9	0
2	Sonny Siebert S. Siebert	10/1/1964	1964	CLE	@	BOS	L	1	1.50	5	0	0	0	6.0	5	1	3	0	2	0	0	0	24	0
3	Sonny Siebert S. Siebert	9/27/1964	1964	CLE	vs	BAL	L	1	10.80	3	0	0	0	3.1	5	4	4	1	2	0	0	0	16	0
4	Sonny Siebert S. Siebert	9/22/1964	1964	CLE	vs	NYY	L	1	7.20	1	0	0	0	5.0	7	4	4	2	2	0	0	0	24	0
5	Sonny Siebert S. Siebert	9/16/1964	1964	CLE	vs	WSH	W	1	1.00	5	1	0	0	9.0	6	1	1	0	4	0	0	0	35	0
6	Sonny Siebert S. Siebert	9/10/1964	1964	CLE	vs	BOS	W	1	4.91	7	0	0	0	7.1	6	4	4	2	0	0	0	0	27	0
7	Sonny Siebert S. Siebert	9/5/1964	1964	CLE	@	CWS	L	1	6.75	3	0	0	0	4.0	5	3	3	1	1	0	0	1	18	0
8	Sonny Siebert S. Siebert	8/28/1964	1964	CLE	@	KCA	W	1	1.00	5	1	0	0	9.0	7	1	1	0	3	0	0	0	35	0
9	Sonny Siebert S. Siebert	8/22/1964	1964	CLE	vs	LAA	W	1	0.00	6	1	1	0	9.0	5	0	0	0	1	0	0	0	33	0
10	Sonny Siebert S. Siebert	8/16/1964	1964	CLE	@	MIN	L	1	4.50	5	0	0	0	6.0	6	3	3	2	0	0	0	0	25	0
11	Sonny Siebert S. Siebert	8/12/1964	1964	CLE	@	LAA		0	2.08	5	0	0	0	4.1	5	1	1	0	0	0	0	0	18	0
12	Sonny Siebert S. Siebert	8/9/1964	1964	CLE	vs	MIN	W	1	0.00	7	0	0	0	6.1	4	0	0	0	2	1	0	0	25	0
13	Sonny Siebert S. Siebert	8/4/1964	1964	CLE	vs	WSH		0	0.00	7	0	0	0	6.0	2	0	0	0	3	0	0	0	22	0
14	Sonny Siebert S. Siebert	7/30/1964	1964	CLE	@	WSH	L	0	5.40	3	0	0	0	1.2	3	1	2	0	2	0	0	1	11	0
15	Sonny Siebert S. Siebert	7/25/1964	1964	CLE	vs	BOS		0	1.69	6	0	0	0	5.1	3	1	2	1	2	0	0	0	20	2
16	Sonny Siebert S. Siebert	7/23/1964	1964	CLE	@	BAL		0	2.08	1	0	0	0	4.1	4	1	1	1	3	1	0	0	19	0
17	Sonny Siebert S. Siebert	7/21/1964	1964	CLE	@	BAL		0	0.00	5	0	0	0	2.0	0	0	0	0	0	0	0	0	6	0
18	Sonny Siebert S. Siebert	7/19/1964	1964	CLE	@	NYY		0	0.00	2	0	0	0	2.0	1	0	0	0	1	0	1	0	7	0
19	Sonny Siebert S. Siebert	7/16/1964	1964	CLE	@	KCA		0	0.00	2	0	0	0	2.0	1	0	0	0	1	0	0	0	7	0
20	Sonny Siebert S. Siebert	7/15/1964	1964	CLE	@	KCA		0	0.00	0	0	0	0	0.2	0	0	0	0	0	0	1	0	1	0
21	Sonny Siebert S. Siebert	7/13/1964	1964	CLE	vs	NYY		0	27.00	1	0	0	0	1.0	3	3	3	0	2	0	1	0	8	0
22	Sonny Siebert S. Siebert	7/11/1964	1964	CLE	vs	BAL		0	9.00	2	0	0	0	2.0	5	2	2	1	0	0	0	0	9	0
23	Sonny Siebert S. Siebert	7/9/1964	1964	CLE	vs	BAL		0	0.00	2	0	0	0	2.0	0	0	0	0	0	0	0	0	6	0
24	Sonny Siebert S. Siebert	7/2/1964	1964	CLE	@	DET		0	3.60	5	0	0	0	5.0	5	2	2	0	1	0	0	0	22	1
25	Sonny Siebert S. Siebert	6/30/1964	1964	CLE	vs	CWS		0	27.00	1	0	0	0	0.1	1	1	1	1	0	0	0	0	2	0
	Total							14	3.23	144	3	1	3	156.0	142	56	61	15	57	2	10	4	653	6