2018 MLB On-Base Percentage by Team

The Boston Red Sox led all of MLB in on-base percentage in 2018, with .339, .004 ahead of the Washington Nationals. The average across 30 MLB teams is .318.

Led all of MLB in 2018 Boston Red Sox 162 games

.339 On-Base Percentage .004 clear of Washington Nationals

#	Team	League	G	OBP
1	Boston Red Sox	AL	162	.339
2	Washington Nationals	NL	162	.335
3	Tampa Bay Rays	AL	162	.333
4	Chicago Cubs	NL	163	.333
5	Los Angeles Dodgers	NL	163	.333
6	Cleveland Indians	AL	162	.332
7	Houston Astros	AL	162	.329
7	New York Yankees	AL	162	.329
9	Cincinnati Reds	NL	162	.328
10	Oakland Athletics	AL	162	.325
11	Atlanta Braves	NL	162	.324
12	Milwaukee Brewers	NL	163	.323
13	Colorado Rockies	NL	163	.322
14	St. Louis Cardinals	NL	162	.321
15	Texas Rangers	AL	162	.318
	MLB average			.318
16	Minnesota Twins	AL	162	.318
17	Pittsburgh Pirates	NL	161	.317
18	Seattle Mariners	AL	162	.314
19	Philadelphia Phillies	NL	162	.314
20	Los Angeles Angels of Anaheim	AL	162	.313
21	New York Mets	NL	162	.312
22	Toronto Blue Jays	AL	162	.312
23	Arizona Diamondbacks	NL	162	.310
24	Kansas City Royals	AL	162	.305
25	Miami Marlins	NL	161	.303
26	Chicago White Sox	AL	162	.302
27	Detroit Tigers	AL	162	.300
28	San Francisco Giants	NL	162	.300
29	Baltimore Orioles	AL	162	.298
30	San Diego Padres	NL	162	.297

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.