The Chicago Cubs have the most wins by a team against a division this season, with 15 wins against the NL West.

Interpreted as:

highest sum of wins in an MLB division this regular season

	TEAM	W	OPP DIVISION	SEASON	L	W%	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Cubs	15	NL West	2025	11	.577	26	896	133	217	46	5	33	130	101	6	220	37	8	1,013	372	84	4	6	2	11	.242	.321	.415	.736
2	Guardians	14	AL Central	2025	5	.737	19	614	79	138	26	3	18	73	63	6	150	9	5	695	224	47	2	10	3	9	.225	.299	.365	.664
3	Mariners	14	AL West	2025	8	.636	22	729	95	174	26	2	23	92	81	11	190	26	2	829	273	51	3	5	0	16	.239	.322	.374	.697
4	Phillies	13	NL West	2025	4	.765	17	573	92	161	32	3	23	85	65	4	120	14	4	649	268	58	1	6	3	12	.281	.355	.468	.823
5	Dodgers	13	NL East	2025	9	.591	22	766	122	202	31	8	32	120	88	9	205	26	5	870	345	71	1	6	3	19	.264	.344	.450	.794
6	Tigers	12	AL Central	2025	6	.667	18	607	81	144	28	3	19	77	63	9	156	4	2	683	235	50	1	3	1	7	.237	.317	.387	.704
7	Giants	12	AL West	2025	3	.800	15	496	61	113	22	2	13	60	61	2	129	14	3	564	178	37	4	1	3	3	.228	.314	.359	.673
8	Royals	12	AL Central	2025	12	.500	24	793	67	191	38	3	9	67	62	8	175	19	9	872	262	50	3	6	2	11	.241	.300	.330	.631
9	Blue Jays	11	AL West	2025	8	.579	19	663	91	185	38	0	21	89	68	4	135	11	2	750	286	59	6	9	6	10	.279	.345	.431	.777
10	Yankees	10	AL West	2025	2	.833	12	416	63	105	26	2	21	61	46	8	113	8	2	478	198	49	0	8	5	4	.252	.333	.476	.809
11	Cardinals	10	NL East	2025	9	.526	19	643	88	166	35	0	15	81	67	10	152	14	4	730	246	50	3	7	3	12	.258	.334	.383	.717
12	Tigers	10	AL East	2025	2	.833	12	403	70	109	21	1	17	64	44	4	103	5	1	455	183	39	1	3	1	5	.270	.346	.454	.800
13	Astros	10	AL West	2025	6	.625	16	539	79	138	14	2	18	74	61	8	100	12	2	618	210	34	2	8	5	13	.256	.336	.390	.726
14	Diamondbacks	10	NL East	2025	11	.476	21	709	103	175	37	6	26	102	78	7	172	20	4	804	302	69	2	8	0	15	.247	.324	.426	.750
15	Twins	10	AL Central	2025	12	.455	22	725	77	170	36	1	20	75	65	17	168	9	6	810	268	57	1	2	2	14	.234	.311	.370	.681
16	Blue Jays	10	AL East	2025	12	.455	22	734	83	178	32	0	23	78	76	5	146	11	4	822	279	55	1	6	3	24	.243	.315	.380	.696
17	Twins	9	AL East	2025	3	.750	12	395	53	92	12	0	17	51	29	6	96	6	3	431	155	29	0	1	0	12	.233	.295	.392	.687
18	Mets	9	NL West	2025	4	.692	13	426	60	98	18	4	23	60	49	9	98	12	2	488	193	45	2	2	6	16	.230	.321	.453	.774
19	Mets	9	NL Central	2025	4	.692	13	435	61	127	21	3	17	58	41	6	93	15	1	486	205	41	0	4	0	12	.292	.358	.471	.829
20	Rays	9	AL East	2025	7	.563	16	540	82	134	22	0	20	81	54	4	132	20	4	601	216	42	0	3	0	9	.248	.319	.400	.719
21	Red Sox	9	AL Central	2025	10	.474	19	678	95	180	33	4	25	92	65	12	170	13	6	763	296	62	3	5	5	10	.265	.338	.437	.775
22	Nationals	9	NL West	2025	6	.600	15	492	74	122	26	3	14	68	46	7	115	15	5	552	196	43	3	4	0	5	.248	.319	.398	.717
23	Reds	9	NL Central	2025	12	.429	21	671	81	144	30	4	15	75	61	9	167	11	7	747	227	49	0	6	0	13	.215	.286	.338	.625
24	Mets	9	NL East	2025	4	.692	13	453	76	122	21	2	16	74	43	9	89	5	3	509	195	39	0	4	3	10	.269	.342	.430	.772
25	Phillies	9	NL East	2025	9	.500	18	631	87	168	25	3	19	82	78	9	158	19	3	722	256	47	1	3	3	14	.266	.354	.406	.759