2023 MLB Losses by Team

The Oakland Athletics led all of MLB in losses in 2023, with 112, 6 ahead of the Kansas City Royals. The average across 30 MLB teams is 81.0.

Led all of MLB in 2023 Oakland Athletics 162 games

112 Losses 6 clear of Kansas City Royals

#	Team	League	G	L
1	Oakland Athletics	AL	162	112
2	Kansas City Royals	AL	162	106
3	Colorado Rockies	NL	162	103
4	Chicago White Sox	AL	162	101
5	St. Louis Cardinals	NL	162	91
5	Washington Nationals	NL	162	91
7	Los Angeles Angels of Anaheim	AL	162	89
8	New York Mets	NL	162	87
9	Cleveland Guardians	AL	162	86
9	Pittsburgh Pirates	NL	162	86
11	Boston Red Sox	AL	162	84
11	Detroit Tigers	AL	162	84
13	San Francisco Giants	NL	162	83
	MLB average			81.0
14	Cincinnati Reds	NL	162	80
14	New York Yankees	AL	162	80
14	San Diego Padres	NL	162	80
17	Chicago Cubs	NL	162	79
18	Arizona Diamondbacks	NL	162	78
18	Miami Marlins	NL	162	78
20	Minnesota Twins	AL	162	75
21	Seattle Mariners	AL	162	74
22	Toronto Blue Jays	AL	162	73
23	Houston Astros	AL	162	72
23	Philadelphia Phillies	NL	162	72
23	Texas Rangers	AL	162	72
26	Milwaukee Brewers	NL	162	70
27	Tampa Bay Rays	AL	162	63
28	Los Angeles Dodgers	NL	162	62
29	Baltimore Orioles	AL	162	61
30	Atlanta Braves	NL	162	58

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.