Buck O'Brien was 4-11 with an ERA of 3.73 and 58 strikeouts in 21 appearances in his last season.

		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		Buck O'Brien B. O'Brien	1913	TOT	21	4	11	.267	15	3.73	58	6	0	0	108.2	124	45	56	0	48	0	4		448	1	4.80	3.98	1.21	0.00	12.9	10.7	1.58	.363	4.64	130	2.81	96	10.27	1.2

Games

	NAME	DATE	SEASON	TM		OPP	DEC	GS	ERA	SO	CG	IP	H	ER	R	BB	GF	TBF	WP
1	Buck O'Brien B. O'Brien	8/6/1913	1913	CWS	@	WSH		0	40.50	0	0	0.2	1	3	3	1	0	4	0
2	Buck O'Brien B. O'Brien	7/29/1913	1913	CWS	@	BSA	L	1	0.00	1	0	6.0	4	0	5	7	0	27	0
3	Buck O'Brien B. O'Brien	7/26/1913	1913	CWS	@	BSA		0	0.00	2	0	1.0	0	0	0	0	1	3	0
4	Buck O'Brien B. O'Brien	7/23/1913	1913	CWS	vs	WSH		0	3.00	1	0	3.0	2	1	1	1	1	10	0
5	Buck O'Brien B. O'Brien	7/16/1913	1913	CWS	vs	PHA		1	6.75	0	0	2.2	6	2	2	1	0	14	0
6	Buck O'Brien B. O'Brien	7/11/1913	1913	CWS	vs	NYY	L	1	5.40	0	0	5.0	8	3	4	3	0	23	0
7	Buck O'Brien B. O'Brien	6/28/1913	1913	BSA	vs	NYY		0	3.86	2	0	2.1	3	1	1	2	0	9	0
8	Buck O'Brien B. O'Brien	6/19/1913	1913	BSA	vs	DET		1	4.32	3	0	8.1	10	4	4	5	0	36	0
9	Buck O'Brien B. O'Brien	6/13/1913	1913	BSA	vs	SLA		1	6.75	3	0	8.0	9	6	6	7	0	36	1
10	Buck O'Brien B. O'Brien	6/4/1913	1913	BSA	vs	CWS	L	1	9.00	2	0	2.0	4	2	3	2	0	11	0
11	Buck O'Brien B. O'Brien	5/31/1913	1913	BSA	@	WSH	L	0	5.40	1	0	1.2	3	1	1	1	1	10	0
12	Buck O'Brien B. O'Brien	5/29/1913	1913	BSA	@	WSH	L	1	13.50	0	0	2.2	5	4	4	0	0	13	0
13	Buck O'Brien B. O'Brien	5/22/1913	1913	BSA	@	CWS	L	1	2.25	4	1	8.0	8	2	2	3	0	30	0
14	Buck O'Brien B. O'Brien	5/17/1913	1913	BSA	@	SLA	L	1	3.38	4	1	8.0	7	3	4	2	0	30	0
15	Buck O'Brien B. O'Brien	5/13/1913	1913	BSA	@	DET	W	1	1.00	5	1	9.0	9	1	1	1	0	36	0
16	Buck O'Brien B. O'Brien	5/9/1913	1913	BSA	@	CLE	W	1	1.00	4	1	9.0	7	1	1	2	0	33	0
17	Buck O'Brien B. O'Brien	5/5/1913	1913	BSA	vs	WSH	L	1	1.50	9	1	12.0	11	2	5	4	0	52	0
18	Buck O'Brien B. O'Brien	5/1/1913	1913	BSA	vs	WSH	W	1	2.00	4	1	9.0	10	2	2	5	0	40	0
19	Buck O'Brien B. O'Brien	4/25/1913	1913	BSA	@	WSH	L	1	3.68	12	0	7.1	9	3	3	1	0	30	0
20	Buck O'Brien B. O'Brien	4/19/1913	1913	BSA	@	PHA	L	1	40.50	0	0	0.2	5	3	3	0	0	6	0
21	Buck O'Brien B. O'Brien	4/17/1913	1913	BSA	@	PHA	L	0	18.00	1	0	1.0	3	2	2	1	1	9	0
	Total							15	3.73	58	6	108.2	124	45	56	48	4	448	1