highest tbf per earned runs by a starting pitcher with at least 27 tbf in mlb history

John Gaddy has the most career total batters faced per earned run by a starting pitcher when facing 27+ batters, with 57.

	NAME	TBF/ER	TBF	ER	G	W	L	W%	GS	ERA	SO	CG	SHO	SV	IP	H	R	HR	BB	HBP	GF	IBB	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	H/9
1	John Gaddy J. Gaddy	57	57	1	2	2	0	1.000	2	0.69	3	1	0	0	13.0	13	3	0	4	1	0		0	2.08	2.77	0.75	0.00	5.3	7.0	1.31	.265	2.08	9.00
2	Trevor McDonald T. McDonald	50	50	1	2	1	0	1.000	2	0.69	13	0	0	0	13.0	10	4	1	1	0	0	0	1	9.00	0.69	13.00	0.69	26.0	2.0	0.85	.257	2.77	6.92
3	Juan Pena J. Pena	49	49	1	2	2	0	1.000	2	0.69	15	0	0	0	13.0	9	1	0	3	0	0	0	0	10.38	2.08	5.00	0.00	30.6	6.1	0.92	.290	0.69	6.23
4	Minnie Rojas M. Rojas	48	48	1	2	2	0	1.000	2	0.77	6	0	0	0	11.2	12	1	1	1	1	0	0	0	4.63	0.77	6.00	0.77	12.5	2.1	1.11	.282	0.77	9.26
5	Marty McLeary M. McLeary	47	47	1	2	1	0	1.000	2	0.75	4	0	0	0	12.0	9	1	1	4	0	0	0	0	3.00	3.00	1.00	0.75	8.5	8.5	1.08	.211	0.75	6.75
6	Tim Burke T. Burke	47	47	1	2	1	0	1.000	2	0.75	11	0	0	0	12.0	12	1	0	1	0	0	1	0	8.25	0.75	11.00	0.00	23.4	2.1	1.08	.343	0.75	9.00
7	Grover Powell G. Powell	44.5	89	2	4	1	1	.500	4	0.86	10	1	1	0	21.0	13	6	0	13	0	0	0	2	4.29	5.57	0.77	0.00	11.2	14.6	1.24	.197	2.57	5.57
8	Chad Zerbe C. Zerbe	42	42	1	2	1	0	1.000	2	0.93	3	0	0	0	9.2	8	3	0	5	0	0	0	0	2.79	4.66	0.60	0.00	7.1	11.9	1.34	.235	2.79	7.45
9	Erik Miller E. Miller	41	41	1	10	0	0		10	0.84	11	0	0	0	10.2	7	2	1	6	0	0	0	0	9.28	5.06	1.83	0.84	26.8	14.6	1.22	.261	1.69	5.91
10	Bob Humphreys B. Humphreys	40	80	2	4	3	1	.750	4	0.95	11	0	0	0	19.0	17	3	0	8	0	0	0	0	5.21	3.79	1.38	0.00	13.8	10.0	1.32	.279	1.42	8.05
11	Ray Martin R. Martin	37	37	1	1	1	0	1.000	1	1.00	2	1	0	0	9.0	7	1	0	4	0	0		0	2.00	4.00	0.50	0.00	5.4	10.8	1.22	.226	1.00	7.00
12	Eddie O'Brien E. O'Brien	36	36	1	1	1	0	1.000	1	1.00	8	1	0	0	9.0	6	1	0	3	0	0	0	0	8.00	3.00	2.67	0.00	22.2	8.3	1.00	.240	1.00	6.00
13	Dave Jolly D. Jolly	36	36	1	1	0	0		1	0.90	3	0	0	0	10.0	4	1	0	6	0	0	1	0	2.70	5.40	0.50	0.00	8.3	16.7	1.00	.148	0.90	3.60
14	Rodrigo Rosario R. Rosario	33	33	1	2	1	0	1.000	2	1.13	6	0	0	0	8.0	5	2	0	3	1	0	1	1	6.75	3.38	2.00	0.00	18.2	9.1	1.00	.217	2.25	5.63
15	Len Perme L. Perme	33	33	1	1	0	1	.000	1	1.00	2	1	0	0	9.0	4	1	0	2	0	0		0	2.00	2.00	1.00	0.00	6.1	6.1	0.67	.138	1.00	4.00
16	Rhett Lowder R. Lowder	32	128	4	6	2	2	.500	6	1.17	22	0	0	0	30.2	25	4	0	14	0	0	0	0	6.46	4.11	1.57	0.00	17.2	10.9	1.27	.272	1.17	7.34
17	Travis Lakins T. Lakins	31	31	1	4	0	0		4	1.23	6	0	0	0	7.1	3	1	0	5	1	0	0	1	7.36	6.14	1.20	0.00	19.4	16.1	1.09	.158	1.23	3.68
18	Whitey Wistert W. Wistert	30	30	1	1	0	1	.000	1	1.29	1	0	0	0	7.0	5	1	1	5	0	0		0	1.29	6.43	0.20	1.29	3.3	16.7	1.43	.174	1.29	6.43
19	Don Kainer D. Kainer	28.33	85	3	3	0	0		3	1.45	10	0	0	0	18.2	18	6	0	9	3	0	1	0	4.82	4.34	1.11	0.00	11.8	10.6	1.45	.286	2.89	8.68
20	Steven Cruz S. Cruz	28	28	1	4	0	0		4	1.59	7	0	0	0	5.2	7	1	0	4	0	0	0	0	11.12	6.35	1.75	0.00	25.0	14.3	1.94	.412	1.59	11.12
21	Dennis Musgraves D. Musgraves	28	28	1	1	0	0		1	1.29	3	0	0	0	7.0	7	1	0	1	0	0	0	1	3.86	1.29	3.00	0.00	10.7	3.6	1.14	.292	1.29	9.00
22	Dick Baney D. Baney	27.67	83	3	3	2	0	1.000	3	1.33	7	0	0	0	20.1	21	3	2	5	1	0	1	0	3.10	2.21	1.40	0.89	8.4	6.0	1.28	.279	1.33	9.30
23	River Ryan R. Ryan	27	81	3	4	1	0	1.000	4	1.33	18	0	0	0	20.1	15	4	1	9	0	0	0	0	7.97	3.98	2.00	0.44	22.2	11.1	1.18	.264	1.77	6.64
24	Gordon Seyfried G. Seyfried	27	27	1	1	0	1	.000	1	1.59	1	0	0	0	5.2	7	2	0	3	0	0	1	1	1.59	4.76	0.33	0.00	3.7	11.1	1.76	.304	3.18	11.12
25	Trader Horne T. Horne	27	27	1	1	0	0		1	1.80	3	0	0	0	5.0	6	3	0	7	0	0		0	5.40	12.60	0.43	0.00	11.1	25.9	2.60	.353	5.40	10.80