Pete Lovrich had the highest ERA by a starting pitcher in 1963, with an ERA of 108.00.

	NAME	ERA	SEASON	TM	G	W	L	W%	GS	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	H/9
1	Pete Lovrich P. Lovrich	108.00	1963	KCA	1	0	1	.000	1	1	0	0	0	0.1	5	4	4	0	1	0	0	1	7	0	27.00	27.00	1.00	0.00	14.3	14.3	18.00	1.000	108.00	135.00
2	Norm Bass N. Bass	67.50	1963	KCA	1	0	0		1	1	0	0	0	0.2	3	5	5	0	4	0	0	0	9	0	13.50	54.00	0.25	0.00	11.1	44.4	10.50	.750	67.50	40.50
3	Conrad Cardinal C. Cardinal	40.50	1963	HOU	1	0	1	.000	1	0	0	0	0	0.2	3	3	5	0	3	0	0	0	8	0	0.00	40.50	0.00	0.00	0.0	37.5	9.00	.600	67.50	40.50
4	Dick Calmus D. Calmus	27.00	1963	LAD	1	0	1	.000	1	0	0	0	0	0.2	4	2	2	1	0	0	0	0	5	0	0.00	0.00		13.50	0.0	0.0	6.00	.750	27.00	54.00
5	Dom Zanni D. Zanni	18.00	1963	CIN	1	0	0		1	2	0	0	0	2.0	7	4	4	0	1	0	0	0	13	0	9.00	4.50	2.00	0.00	15.4	7.7	4.00	.700	18.00	31.50
6	Jay Dahl J. Dahl	16.88	1963	HOU	1	0	1	.000	1	0	0	0	0	2.2	7	5	7	0	0	0	0	0	16	1	0.00	0.00		0.00	0.0	0.0	2.63	.438	23.63	23.63
7	Eli Grba E. Grba	15.43	1963	LAA	1	0	1	.000	1	1	0	0	0	2.1	4	4	4	1	1	0	0	0	12	0	3.86	3.86	1.00	3.86	8.3	8.3	2.14	.333	15.43	15.43
8	Jerry Walker J. Walker	15.19	1963	CLE	2	0	2	.000	2	2	0	0	0	5.1	14	9	9	0	3	1	0	2	31	0	3.38	5.06	0.67	0.00	6.5	9.7	3.19	.560	15.19	23.63
9	Wally Bunker W. Bunker	13.50	1963	BAL	1	0	1	.000	1	1	0	0	0	4.0	10	6	6	1	3	0	0	0	25	0	2.25	6.75	0.33	2.25	4.0	12.0	3.25	.450	13.50	22.50
10	Frank Linzy F. Linzy	13.50	1963	SFG	1	0	0		1	2	0	0	0	2.0	8	3	3	0	0	1	0	0	13	0	9.00	0.00		0.00	15.4	0.0	4.00	.800	13.50	36.00
11	Ed Hobaugh E. Hobaugh	12.00	1963	WSH	1	0	0		1	1	0	0	0	3.0	5	4	4	2	2	1	0	0	17	0	3.00	6.00	0.50	6.00	5.9	11.8	2.33	.273	12.00	15.00
12	Fred Norman F. Norman	11.37	1963	KCA	2	0	1	.000	2	6	0	0	0	6.1	9	8	9	1	7	0	0	0	35	1	8.53	9.95	0.86	1.42	17.1	20.0	2.53	.381	12.79	12.79
13	Jim Brewer J. Brewer	11.25	1963	CHC	1	0	1	.000	1	2	0	0	0	4.0	7	5	5	1	0	0	0	0	18	0	4.50	0.00		2.25	11.1	0.0	1.75	.400	11.25	15.75
14	George Brunet G. Brunet	10.80	1963	HOU	2	0	2	.000	2	4	0	0	0	5.0	10	6	6	0	4	0	0	0	28	0	7.20	7.20	1.00	0.00	14.3	14.3	2.80	.500	10.80	18.00
15	Tom Parsons T. Parsons	10.38	1963	PIT	1	0	1	.000	1	2	0	0	0	4.1	7	5	6	1	2	0	0	0	22	0	4.15	4.15	1.00	2.08	9.1	9.1	2.08	.353	12.46	14.54
16	Larry Bearnarth L. Bearnarth	9.90	1963	NYM	2	0	1	.000	2	6	0	0	0	10.0	18	11	11	1	3	0	0	0	48	0	5.40	2.70	2.00	0.90	12.5	6.3	2.10	.447	9.90	16.20
17	Bob Baird B. Baird	9.31	1963	WSH	3	0	3	.000	3	4	0	0	0	9.2	12	10	15	1	7	1	0	0	51	0	3.72	6.52	0.57	0.93	7.8	13.7	1.97	.289	13.97	11.17
18	Harvey Haddix H. Haddix	9.00	1963	PIT	1	0	0		1	2	0	0	0	3.0	5	3	3	0	1	0	0	1	15	0	6.00	3.00	2.00	0.00	13.3	6.7	2.00	.417	9.00	15.00
19	Jack Jenkins J. Jenkins	8.64	1963	WSH	2	0	2	.000	2	5	0	0	0	8.1	14	8	8	2	9	0	0	0	45	1	5.40	9.72	0.56	2.16	11.1	20.0	2.76	.414	8.64	15.12
20	Jim Owens J. Owens	8.38	1963	CIN	3	0	1	.000	3	4	0	0	0	9.2	10	9	9	1	11	0	0	0	49	2	3.72	10.24	0.36	0.93	8.2	22.4	2.17	.273	8.38	9.31
21	Jim Golden J. Golden	7.71	1963	HOU	1	0	1	.000	1	1	0	0	0	2.1	6	2	2	0	2	0	0	0	14	1	3.86	7.71	0.50	0.00	7.1	14.3	3.43	.545	7.71	23.14
22	Jerry Stephenson J. Stephenson	7.71	1963	BOS	1	0	0		1	3	0	0	0	2.1	5	2	2	0	2	0	0	0	13	1	11.57	7.71	1.50	0.00	23.1	15.4	3.00	.625	7.71	19.29
23	Mel Nelson M. Nelson	7.53	1963	LAA	3	0	3	.000	3	10	0	0	0	14.1	20	12	12	4	4	1	0	0	68	1	6.28	2.51	2.50	2.51	14.7	5.9	1.67	.327	7.53	12.56
24	Dick Hall D. Hall	7.36	1963	BAL	3	0	3	.000	3	12	0	0	0	18.1	22	15	16	5	3	1	0	0	80	0	5.89	1.47	4.00	2.45	15.0	3.8	1.36	.288	7.85	10.80
25	Carl Bouldin C. Bouldin	7.30	1963	WSH	3	0	2	.000	3	7	0	0	0	12.1	21	10	13	1	4	0	0	0	64	0	5.11	2.92	1.75	0.73	10.9	6.3	2.03	.385	9.49	15.32