Bryce Harper had his highest OPS in a month in March 2019, with an OPS of 1.650.

	NAME	OPS	MONTH	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG
1	Bryce Harper B. Harper	1.650	March 2019	3	9	3	3	1	0	2	2	4	0	3	0	0	13	10	3	0	0	1	0	.333	.538	1.111
2	Bryce Harper B. Harper	1.545	October 2021	3	10	2	5	2	0	1	2	1	0	5	0	0	11	10	3	0	0	0	0	.500	.545	1.000
3	Bryce Harper B. Harper	1.379	May 2015	26	86	24	31	4	1	13	28	22	1	17	2	1	109	76	18	0	0	1	4	.360	.495	.884
4	Bryce Harper B. Harper	1.281	April 2017	25	92	32	36	8	0	9	26	22	0	20	0	2	114	71	17	0	0	5	2	.391	.509	.772
5	Bryce Harper B. Harper	1.244	September 2015	27	88	25	30	7	0	10	19	26	0	21	0	0	116	67	17	0	2	3	5	.341	.483	.761
6	Bryce Harper B. Harper	1.236	August 2023	26	97	23	35	9	1	10	24	14	3	24	0	1	115	76	20	0	1	2	3	.361	.452	.784
7	Bryce Harper B. Harper	1.234	July 2017	23	90	26	34	7	1	9	22	13	0	17	0	0	103	70	17	0	0	0	3	.378	.456	.778
8	Bryce Harper B. Harper	1.231	August 2021	28	98	25	33	11	1	10	25	22	1	21	0	1	124	76	22	1	2	4	1	.337	.455	.776
9	Bryce Harper B. Harper	1.166	June 2024	23	91	20	34	10	0	7	16	13	0	18	1	1	104	65	17	0	0	2	3	.374	.452	.714
10	Bryce Harper B. Harper	1.150	April 2013	26	93	18	32	6	1	9	18	14	0	16	1	2	107	67	16	0	0	1	2	.344	.430	.720
11	Bryce Harper B. Harper	1.143	June 2015	22	81	11	30	8	0	6	15	11	1	13	1	1	93	56	14	0	0	1	1	.370	.452	.691
12	Bryce Harper B. Harper	1.121	April 2016	23	77	16	22	6	0	9	24	17	0	13	5	1	96	55	15	0	2	4	1	.286	.406	.714
13	Bryce Harper B. Harper	1.115	September 2021	27	89	20	27	8	0	8	19	25	0	27	1	1	116	59	16	1	1	5	4	.303	.452	.663
14	Bryce Harper B. Harper	1.100	October 2017	1	4	2	2	0	0	0	0	1	0	1	1	0	5	2	0	0	0	0	0	.500	.600	.500
15	Bryce Harper B. Harper	1.095	June 2022	19	64	15	23	3	0	5	16	11	1	11	3	1	77	41	8	0	1	0	2	.359	.455	.641
16	Bryce Harper B. Harper	1.078	May 2022	23	95	17	33	11	0	7	18	8	0	17	3	0	104	65	18	0	1	4	2	.347	.394	.684
17	Bryce Harper B. Harper	1.063	April 2021	23	78	17	25	5	0	6	10	16	2	19	2	0	96	48	11	0	0	2	2	.321	.448	.615
18	Bryce Harper B. Harper	1.049	September 2012	28	106	26	35	7	3	7	14	11	1	24	4	1	119	69	17	1	0	0	2	.330	.398	.651
19	Bryce Harper B. Harper	1.025	August 2019	24	94	23	26	2	0	11	25	14	1	26	4	0	109	61	13	0	0	1	2	.277	.376	.649
20	Bryce Harper B. Harper	1.023	July 2021	25	84	15	28	11	0	3	15	19	0	18	5	1	104	48	14	0	1	1	2	.333	.452	.571
21	Bryce Harper B. Harper	1.017	July 2020	3	9	2	2	0	0	1	3	4	0	3	0	0	13	5	1	0	0	0	0	.222	.462	.556
22	Bryce Harper B. Harper	1.015	July 2015	24	80	15	24	7	0	5	10	19	1	23	1	0	100	46	12	0	0	4	1	.300	.440	.575
23	Bryce Harper B. Harper	1.009	April 2018	27	83	22	20	1	0	8	17	37	0	21	3	0	122	45	9	0	2	8	0	.241	.467	.542
24	Bryce Harper B. Harper	.997	August 2020	26	86	22	25	4	1	6	18	20	2	17	4	0	111	49	11	1	2	5	4	.291	.427	.570
25	Bryce Harper B. Harper	.990	May 2024	26	96	19	30	5	0	7	24	16	0	27	2	0	113	56	12	0	1	3	0	.313	.407	.583