league r/g by month, since 1990

	LEAGUE	MONTH	R/G	R	G	W%	W	L	AB	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	NL	March	8.75	1,514	173	.497	155	157	10,746	2,667	522	37	363	1,450	1,187	125	2,681	209	59	12,234	4,352	922	80	96	63	234	.248	.327	.405	.732
2	AL	March	7.68	1,267	165	.503	149	147	9,947	2,353	476	47	317	1,202	1,002	126	2,452	171	56	11,186	3,874	840	33	78	32	200	.237	.312	.389	.702
3	NL	April	8.5	55,596	6,538	.501	6,238	6,206	421,683	106,477	21,242	2,436	12,201	52,726	43,124	4,312	90,927	7,926	3,246	477,103	169,194	35,879	4,521	3,463	3,137	9,079	.253	.326	.401	.727
4	AL	April	8.88	54,876	6,181	.499	5,850	5,882	399,602	102,503	20,633	1,901	12,347	52,042	40,459	4,310	82,103	7,385	2,980	449,984	163,979	34,881	2,199	3,414	2,186	9,193	.257	.329	.410	.739
5	NL	May	8.19	64,854	7,919	.497	7,253	7,331	496,027	127,132	24,981	2,705	14,616	61,672	47,917	4,849	104,922	9,261	3,831	557,925	201,371	42,302	5,323	3,809	3,988	10,797	.256	.326	.406	.732
6	AL	May	8.59	65,113	7,581	.503	6,994	6,916	476,148	124,081	24,410	2,376	15,095	61,975	46,090	4,548	95,241	8,652	3,597	533,527	198,528	41,881	2,746	3,995	2,776	10,776	.261	.329	.417	.746
7	NL	June	7.04	63,693	9,043	.492	6,971	7,186	482,555	124,750	24,412	2,634	14,636	60,574	44,718	4,841	101,063	8,901	3,627	540,987	198,338	41,682	5,015	3,858	3,775	10,416	.259	.325	.411	.736
8	AL	June	7.32	63,863	8,719	.508	6,862	6,647	463,950	122,281	23,824	2,319	15,102	60,804	43,849	4,535	93,242	8,183	3,361	519,007	196,049	41,245	2,876	3,797	2,750	10,518	.264	.331	.423	.753
9	NL	July	8.16	62,011	7,603	.501	6,898	6,884	469,896	121,587	23,847	2,633	14,220	58,944	44,038	4,806	98,871	8,586	3,360	527,383	193,360	40,700	5,056	3,587	3,705	10,166	.259	.326	.411	.738
10	AL	July	8.59	62,739	7,303	.499	6,583	6,597	452,877	119,366	23,537	2,273	14,741	59,729	42,079	4,585	90,877	7,855	3,283	506,066	191,672	40,551	2,683	3,842	2,597	10,245	.264	.330	.423	.753
11	NL	August	8.42	67,782	8,052	.500	7,496	7,493	510,928	132,184	25,455	2,880	15,889	64,465	48,016	5,267	108,940	9,077	3,560	573,372	211,066	44,224	5,315	3,846	3,950	11,032	.259	.326	.413	.740
12	AL	August	8.76	67,833	7,747	.500	7,190	7,193	493,679	129,576	25,237	2,447	16,206	64,688	45,767	4,974	100,569	8,479	3,344	551,437	208,325	43,890	2,887	4,130	2,747	11,132	.262	.329	.422	.751
13	NL	September	8.52	62,691	7,357	.500	7,027	7,017	475,719	121,039	23,473	2,731	14,325	59,438	46,638	4,922	104,877	8,785	3,250	536,105	192,949	40,529	5,113	3,713	3,723	10,208	.254	.325	.406	.731
14	AL	September	8.8	61,952	7,044	.500	6,703	6,713	458,039	118,145	23,022	2,270	14,248	58,966	43,980	4,593	97,163	8,182	3,144	512,961	188,451	39,540	2,576	3,773	2,552	10,271	.258	.327	.411	.738
15	NL	October	8.03	3,499	436	.499	426	428	28,761	7,126	1,428	190	772	3,323	2,660	256	6,522	522	234	32,151	11,250	2,390	281	193	203	601	.248	.315	.391	.706
16	AL	October	8.53	3,658	429	.501	420	418	28,513	7,207	1,360	148	784	3,422	2,664	296	5,996	555	207	31,872	11,215	2,292	166	233	158	645	.253	.321	.393	.714