Luis Arroyo had an 11-8 record with an ERA of 4.19 and 68 strikeouts in 35 appearances in his rookie season in 1955.

		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		Luis Arroyo L. Arroyo	1955	STL	35	11	8	.579	24	4.19	68	9	1	0	159.0	162	74	80	22	63	2	5	6	691	6	3.85	3.57	1.08	1.25	9.8	9.1	1.42	.261	4.53	103	4.54	110	9.17	-6.9

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	Luis Arroyo L. Arroyo	9/23/1955	1955	STL	vs	MIL		0	0.00	1	0	0	0	2.0	0	0	0	0	1	0	1	0	7	0
2	Luis Arroyo L. Arroyo	9/7/1955	1955	STL	vs	NYG		0	0.00	2	0	0	0	3.0	0	0	0	0	1	0	0	0	10	0
3	Luis Arroyo L. Arroyo	9/5/1955	1955	STL	vs	CIN		0	0.00	0	0	0	0	0.2	1	0	0	0	2	0	0	0	5	0
4	Luis Arroyo L. Arroyo	9/1/1955	1955	STL	@	PIT		1	18.00	1	0	0	0	2.0	5	4	4	0	1	0	0	0	12	0
5	Luis Arroyo L. Arroyo	8/27/1955	1955	STL	@	PHI	L	1	12.60	3	0	0	0	5.0	7	7	7	2	4	0	0	0	26	0
6	Luis Arroyo L. Arroyo	8/21/1955	1955	STL	@	CIN		0	18.00	0	0	0	0	1.0	2	2	2	0	2	0	1	0	6	0
7	Luis Arroyo L. Arroyo	8/20/1955	1955	STL	@	CIN		1	9.00	2	0	0	0	3.0	4	3	3	0	3	0	0	0	15	0
8	Luis Arroyo L. Arroyo	8/17/1955	1955	STL	vs	MIL	L	1	18.00	1	0	0	0	2.0	5	4	4	2	2	0	0	0	12	0
9	Luis Arroyo L. Arroyo	8/14/1955	1955	STL	vs	CIN		0		0	0	0	0	0.0	1	1	1	1	0	0	0	0	1	0
10	Luis Arroyo L. Arroyo	8/12/1955	1955	STL	vs	CIN		1	15.00	0	0	0	0	3.0	5	5	5	1	3	0	0	0	16	0
11	Luis Arroyo L. Arroyo	8/7/1955	1955	STL	vs	PHI		0	9.00	0	0	0	0	1.0	3	1	1	0	0	0	1	0	6	0
12	Luis Arroyo L. Arroyo	8/5/1955	1955	STL	vs	PHI		1	1.80	3	0	0	0	5.0	6	1	2	1	0	0	0	0	21	0
13	Luis Arroyo L. Arroyo	7/31/1955	1955	STL	vs	BKN	L	1	18.00	2	0	0	0	1.0	3	2	2	0	1	0	0	0	7	0
14	Luis Arroyo L. Arroyo	7/26/1955	1955	STL	vs	PIT	L	1	3.00	5	1	0	0	9.0	7	3	3	2	3	0	0	0	37	0
15	Luis Arroyo L. Arroyo	7/22/1955	1955	STL	@	PHI		0		0	0	0	0	0.0	2	2	2	0	0	0	0	0	2	0
16	Luis Arroyo L. Arroyo	7/21/1955	1955	STL	@	NYG		1	9.82	2	0	0	0	3.2	5	4	4	2	2	0	0	0	18	0
17	Luis Arroyo L. Arroyo	7/17/1955	1955	STL	@	PIT	W	0	5.40	0	0	0	0	1.2	3	1	1	0	1	0	0	0	8	1
18	Luis Arroyo L. Arroyo	7/16/1955	1955	STL	@	PIT	L	1	6.75	2	0	0	0	5.1	9	4	5	0	2	0	0	1	27	0
19	Luis Arroyo L. Arroyo	7/10/1955	1955	STL	vs	CHC	W	1	2.00	2	1	0	0	9.0	7	2	2	1	2	0	0	0	37	0
20	Luis Arroyo L. Arroyo	7/6/1955	1955	STL	@	CIN		0		0	0	0	0	0.0	0	0	0	0	1	0	0	0	1	0
21	Luis Arroyo L. Arroyo	7/5/1955	1955	STL	@	CIN		1	3.86	0	0	0	0	7.0	6	3	3	2	1	0	0	1	27	0
22	Luis Arroyo L. Arroyo	7/1/1955	1955	STL	@	CHC	L	1	36.00	1	0	0	0	1.0	5	4	4	2	0	0	0	0	8	0
23	Luis Arroyo L. Arroyo	6/25/1955	1955	STL	vs	NYG	W	1	3.00	5	1	0	0	9.0	8	3	3	0	7	0	0	2	42	1
24	Luis Arroyo L. Arroyo	6/20/1955	1955	STL	vs	PHI	W	1	0.00	2	1	0	0	9.0	7	0	1	0	3	0	0	0	36	0
25	Luis Arroyo L. Arroyo	6/15/1955	1955	STL	vs	PIT	W	1	3.52	3	0	0	0	7.2	9	3	3	0	0	0	0	0	31	0
	Total							24	4.19	68	9	1	0	159.0	162	74	80	22	63	2	5	6	691	6