Highest On-Base Plus Slug. by a Team in a Season (MLB)

The 1926 St. Louis Stars hold the MLB team record for on-base plus slug. in a season, with .944. Next best is the 1894 Baltimore Orioles, at .901. Seasons shorter than half a full schedule are not counted.

Seasons in which a team played less than half its league's longest schedule are left out.

#	Team	Season	G	OPS
1	St. Louis Stars	1926	85	.944
2	Baltimore Orioles	1894	129	.901
3	New York Lincoln Giants	1929	68	.895
4	Philadelphia Phillies	1894	132	.893
5	St. Louis Stars	1928	89	.887
6	St. Louis Stars	1925	97	.887
7	Boston Beaneaters	1894	133	.885
8	St. Louis Stars	1930	88	.883
9	Homestead Grays	1937	58	.875
10	New York Yankees	1927	155	.872
11	New York Yankees	1930	154	.872
12	New York Yankees	1936	155	.864
12	Homestead Grays	1943	34	.864
14	St. Louis Stars	1927	95	.861
15	Chicago Cubs	1930	156	.859
16	Homestead Grays	1938	52	.854
17	Boston Red Sox	2003	162	.851
18	Seattle Mariners	1996	161	.850
19	Boston Red Sox	1950	154	.848
20	Houston Astros	2019	162	.848
21	Detroit Stars	1929	69	.845
22	Homestead Grays	1939	51	.845
22	Atlanta Braves	2023	162	.845
24	Philadelphia Phillies	1895	133	.844
24	Cleveland Indians	1996	161	.844
26	Philadelphia Phillies	1929	154	.843
27	St. Louis Cardinals	1930	154	.843
27	Homestead Grays	1935	61	.843
29	New York Giants	1930	154	.842
30	New York Yankees	1931	155	.840
31	Cleveland Indians	1999	162	.840
32	St. Louis Stars	1929	88	.840
32	Brooklyn Dodgers	1953	155	.840
34	Texas Rangers	1999	162	.840
35	New York Yankees	2009	162	.839
36	Seattle Mariners	1997	162	.839
37	Cleveland Indians	1995	144	.839
38	New York Yankees	1921	153	.838
39	Houston Astros	2000	162	.837
40	Cleveland Indians	2000	162	.837
41	Colorado Rockies	2001	162	.837
42	New York Yankees	1994	113	.836
43	Harrisburg Giants	1925	73	.836
44	Kansas City Monarchs	1929	79	.836
45	Colorado Rockies	1997	162	.835
46	Cleveland Indians	1994	113	.835
47	Baltimore Black Sox	1929	70	.834
48	San Francisco Giants	2000	162	.834
49	Newark Eagles	1940	42	.833
50	Boston Red Sox	2004	162	.832
51	Atlanta Braves	2020	60	.832
52	Minnesota Twins	2019	162	.832
53	Kansas City Monarchs	1923	95	.831
54	New York Yankees	1932	156	.830
55	New York Yankees	2007	162	.829
56	New York Yankees	2019	162	.829
57	St. Louis Stars	1923	72	.827
58	Colorado Rockies	1996	162	.827
59	Texas Rangers	1996	163	.827
60	Chicago White Sox	2000	162	.826
61	Chicago Cubs	1929	156	.826
62	New York Yankees	1937	157	.825
63	Cleveland Indians	1997	161	.825
64	Philadelphia Phillies	1930	156	.825
65	Anaheim Angels	2000	162	.825
66	Cleveland Indians	1936	157	.825
67	New York Yankees	1939	152	.825
67	New York Yankees	1998	162	.825
69	Atlanta Braves	2003	162	.824
70	New York Yankees	2006	162	.824
71	Philadelphia Athletics	1932	154	.824
72	Hilldale Club	1925	72	.824
73	Houston Astros	2017	162	.823
74	Pittsburgh Pirates	1894	133	.822
74	St. Louis Browns	1922	154	.822
76	Baltimore Orioles	1996	163	.822
77	Baltimore Orioles	1896	132	.822
78	Detroit Tigers	1937	155	.822
79	Pittsburgh Crawfords	1935	74	.822
80	Philadelphia Athletics	1930	154	.821
81	Chicago Colts	1894	136	.821
81	Los Angeles Dodgers	2020	60	.821
83	Colorado Rockies	1995	144	.821
84	Colorado Rockies	1999	162	.819
85	New York Yankees	1999	162	.819
86	Texas Rangers	1998	162	.819
87	Brooklyn Robins	1930	154	.818
88	Pittsburgh Pirates	1925	153	.818
89	Detroit Tigers	1921	154	.818
90	Oakland Athletics	2000	161	.817
91	Birmingham Black Barons	1948	78	.816
92	Colorado Rockies	2000	162	.816
93	Brooklyn Grooms	1894	135	.816
93	Boston Red Sox	1996	162	.816
95	Texas Rangers	2008	162	.816
96	New York Yankees	1929	154	.816
96	Homestead Grays	1936	52	.816
98	Boston Red Sox	1997	162	.815
99	Cleveland Indians	1921	154	.815
100	Texas Rangers	2001	162	.815

A team's total is its players' numbers for the club added up, so a player traded mid-season counts for each team only what he did there. Rates such as ERA and batting average are worked out from the team's summed totals, not averaged across players.