Bob Heffner had a 4-9 record with an ERA of 4.26 and 77 strikeouts in 20 appearances in his rookie season in 1963.

		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		Bob Heffner B. Heffner	1963	BOS	20	4	9	.308	19	4.26	77	3	1	0	124.2	131	59	61	15	36	2	0	1	537	3	5.56	2.60	2.14	1.08	14.3	6.7	1.34	.285	4.40	112	3.72	97	9.46	1.8

	NAME	DATE	SEASON	TM		OPP	DEC	GS	ERA	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP
1	Bob Heffner B. Heffner	9/28/1963	1963	BOS	vs	LAA		0	0.00	0	0	0	0	1.0	0	0	0	0	0	0	0	0	3	0
2	Bob Heffner B. Heffner	9/22/1963	1963	BOS	vs	MIN	L	1	6.43	7	0	0	0	7.0	8	5	5	3	4	0	0	0	33	0
3	Bob Heffner B. Heffner	9/17/1963	1963	BOS	@	CWS	L	1	3.00	3	0	0	0	6.0	5	2	2	0	4	0	0	0	26	1
4	Bob Heffner B. Heffner	9/11/1963	1963	BOS	@	LAA	L	1	4.50	5	0	0	0	6.0	10	3	3	0	1	0	0	0	29	0
5	Bob Heffner B. Heffner	9/6/1963	1963	BOS	@	BAL	L	1	4.50	4	1	0	0	8.0	9	4	4	1	2	0	0	0	35	0
6	Bob Heffner B. Heffner	9/2/1963	1963	BOS	vs	BAL	W	1	0.00	5	1	1	0	9.0	5	0	0	0	1	1	0	0	32	0
7	Bob Heffner B. Heffner	8/30/1963	1963	BOS	vs	WSH	L	1	10.80	2	0	0	0	5.0	9	6	6	1	0	1	0	0	25	0
8	Bob Heffner B. Heffner	8/25/1963	1963	BOS	@	CLE		1	0.82	12	0	0	0	11.0	6	1	1	1	2	0	0	0	41	1
9	Bob Heffner B. Heffner	8/20/1963	1963	BOS	vs	CWS	L	1	9.00	4	0	0	0	6.0	8	6	6	0	3	0	0	0	28	0
10	Bob Heffner B. Heffner	8/16/1963	1963	BOS	vs	CLE	W	1	4.32	5	0	0	0	8.1	9	4	4	2	1	0	0	0	34	0
11	Bob Heffner B. Heffner	8/12/1963	1963	BOS	@	MIN	W	1	2.84	2	0	0	0	6.1	6	2	4	1	1	0	0	0	29	0
12	Bob Heffner B. Heffner	7/31/1963	1963	BOS	vs	MIN		1	7.71	2	0	0	0	4.2	9	4	4	1	1	0	0	0	22	0
13	Bob Heffner B. Heffner	7/27/1963	1963	BOS	vs	LAA		1	1.69	1	0	0	0	5.1	4	1	1	0	0	0	0	0	20	0
14	Bob Heffner B. Heffner	7/24/1963	1963	BOS	vs	KCA
15	Bob Heffner B. Heffner	7/23/1963	1963	BOS	vs	KCA	L	1	1.13	3	0	0	0	8.0	8	1	1	0	3	0	0	0	34	0
16	Bob Heffner B. Heffner	7/17/1963	1963	BOS	@	KCA	L	1	36.00	0	0	0	0	1.0	3	4	4	1	2	0	0	0	8	0
17	Bob Heffner B. Heffner	7/13/1963	1963	BOS	@	MIN	L	1	11.57	0	0	0	0	4.2	7	6	6	3	2	0	0	0	23	0
18	Bob Heffner B. Heffner	7/3/1963	1963	BOS	@	CLE		1	3.00	5	0	0	0	6.0	4	2	2	0	3	0	0	0	25	0
19	Bob Heffner B. Heffner	6/28/1963	1963	BOS	@	NYY		1	3.00	3	0	0	0	6.0	5	2	2	0	1	0	0	0	24	1
20	Bob Heffner B. Heffner	6/24/1963	1963	BOS	vs	CLE		1	5.68	8	0	0	0	6.1	9	4	4	0	1	0	0	1	29	0
21	Bob Heffner B. Heffner	6/19/1963	1963	BOS	vs	DET	W	1	2.00	6	1	0	0	9.0	7	2	2	1	4	0	0	0	37	0
	Total							19	4.26	77	3	1	0	124.2	131	59	61	15	36	2	0	1	537	3