Joe Hudson has the highest career ERA versus the Reds, with an ERA of 162.00.

Interpreted as:

highest era by a player vs reds all-time

	NAME	ERA	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	Joe Hudson J. Hudson	162.00	1	0	0		0	0	0	0	0	0.1	2	6	6	0	4	0	0	1	7	0	0.00	108.00	0.00	0.00	0.0	57.1	18.00	.667	162.00	54.00
2	Joe Trimble J. Trimble	135.00	1	0	1	.000	1	0	0	0	0	0.1	4	5	5	0	1	1	0	0	7	0	0.00	27.00	0.00	0.00	0.0	14.3	15.00	.800	135.00	108.00
3	Bill Pierro B. Pierro	135.00	1	0	0		0	0	0	0	0	0.1	1	5	5	0	3	1	0	0	6	0	0.00	81.00	0.00	0.00	0.0	50.0	12.00	.500	135.00	27.00
4	Roger McKee R. McKee	135.00	1	0	0		0	0	0	0	0	0.1	3	5	5	0	3	0	0		7	0	0.00	81.00	0.00	0.00	0.0	42.9	18.00	.750	135.00	81.00
5	Pat House P. House	108.00	2	0	0		0	0	0	0	0	0.1	3	4	4	0	2	0	0	2	6	1	0.00	54.00	0.00	0.00	0.0	33.3	15.00	.750	108.00	81.00
6	Joe Boyle J. Boyle	81.00	1	0	0		0	0	0	0	0	0.1	0	3	3	0	3	1	0	0	5	0	0.00	81.00	0.00	0.00	0.0	60.0	9.00	.000	81.00	0.00
7	Edwar Colina E. Colina	81.00	1	0	0		0	0	0	0	0	0.1	4	3	3	1	2	0	0	0	7	0	0.00	54.00	0.00	27.00	0.0	28.6	18.00	.750	81.00	108.00
8	Gabriel Ynoa G. Ynoa	81.00	2	0	0		0	1	0	0	0	0.1	2	3	3	0	1	0	0	0	4	0	27.00	27.00	1.00	0.00	25.0	25.0	9.00	1.000	81.00	54.00
9	Curt Schmidt C. Schmidt	81.00	1	0	0		0	1	0	0	0	0.1	2	3	3	0	1	0	0	0	4	0	27.00	27.00	1.00	0.00	25.0	25.0	9.00	1.000	81.00	54.00
10	Bob Smith B. Smith	81.00	1	0	0		0	0	0	0	0	0.2	5	6	6	0	2	0	0	2	9	1	0.00	27.00	0.00	0.00	0.0	22.2	10.50	.714	81.00	67.50
11	Sid Schacht S. Schacht	81.00	1	0	1	.000	0	0	0	0	0	0.1	2	3	3	0	1	0	0	0	4	0	0.00	27.00	0.00	0.00	0.0	25.0	9.00	.667	81.00	54.00
12	Leon Pettit L. Pettit	81.00	1	0	1	.000	1	0	0	0	0	0.1	1	3	3	0	2	0	0		4	0	0.00	54.00	0.00	0.00	0.0	50.0	9.00	.500	81.00	27.00
13	Broadway Jones B. Jones	81.00	1	0	0		0	0	0	0	0	0.1	1	3	3	0	1	0	0		3	0	0.00	27.00	0.00	0.00	0.0	33.3	6.00	.500	81.00	27.00
14	Lefty Gervais L. Gervais	81.00	1	0	0		0	0	0	0	0	0.1	3	3	3	0	0	0	0		4	0	0.00	0.00		0.00	0.0	0.0	9.00	.750	81.00	81.00
15	Gene Lillard G. Lillard	72.00	3	0	1	.000	1	3	0	0	0	1.0	7	8	8	1	4	0	0		14	0	27.00	36.00	0.75	9.00	21.4	28.6	11.00	1.000	72.00	63.00
16	Cole Ragans C. Ragans	67.50	1	0	0		0	0	0	0	0	0.2	3	5	5	0	1	1	0	0	7	0	0.00	13.50	0.00	0.00	0.0	14.3	6.00	.600	67.50	40.50
17	Emmanuel Ramirez E. Ramirez	63.00	2	0	1	.000	0	1	0	0	0	1.0	4	7	8	1	2	1	0	0	10	0	9.00	18.00	0.50	9.00	10.0	20.0	6.00	.600	72.00	36.00
18	Jonathan Loáisiga J. Loáisiga	54.00	2	0	0		0	0	0	0	0	1.0	7	6	6	0	1	0	0	0	11	0	0.00	9.00	0.00	0.00	0.0	9.1	8.00	.700	54.00	63.00
19	David McKay D. McKay	54.00	1	0	0		0	0	0	0	0	0.1	1	2	2	1	1	0	0	0	3	0	0.00	27.00	0.00	27.00	0.0	33.3	6.00	.000	54.00	27.00
20	Rocky Cherry R. Cherry	54.00	1	0	0		0	1	0	0	0	0.1	1	2	2	0	1	1	0	0	4	0	27.00	27.00	1.00	0.00	25.0	25.0	6.00	1.000	54.00	27.00
21	Andy Carter A. Carter	54.00	1	0	0		0	0	0	0	0	0.1	0	2	2	0	1	1	0	1	3	0	0.00	27.00	0.00	0.00	0.0	33.3	3.00	.000	54.00	0.00
22	Dave Schuler D. Schuler	54.00	1	0	0		0	1	0	0	0	0.2	5	4	4	0	1	0	1	0	8	0	13.50	13.50	1.00	0.00	12.5	12.5	9.00	.833	54.00	67.50
23	Dave Wallace D. Wallace	54.00	1	0	0		0	1	0	0	0	0.1	3	2	2	0	1	0	0	0	5	0	27.00	27.00	1.00	0.00	20.0	20.0	12.00	1.000	54.00	81.00
24	Jack Urban J. Urban	54.00	2	0	0		0	1	0	0	0	0.2	4	4	4	0	2	0	1	1	8	0	13.50	27.00	0.50	0.00	12.5	25.0	9.00	.800	54.00	54.00
25	Alex Konikowski A. Konikowski	54.00	1	0	0		0	0	0	0	0	1.0	5	6	6	0	4	0	1	2	12	1	0.00	36.00	0.00	0.00	0.0	33.3	9.00	.625	54.00	45.00