2004 MLB Losses by Team

The Arizona Diamondbacks led all of MLB in losses in 2004, with 111, 7 ahead of the Kansas City Royals. The average across 30 MLB teams is 80.9.

Led all of MLB in 2004 Arizona Diamondbacks 162 games

111 Losses 7 clear of Kansas City Royals

#	Team	League	G	L
1	Arizona Diamondbacks	NL	162	111
2	Kansas City Royals	AL	162	104
3	Seattle Mariners	AL	162	99
4	Montreal Expos	NL	162	95
5	Colorado Rockies	NL	162	94
5	Milwaukee Brewers	NL	161	94
5	Toronto Blue Jays	AL	161	94
8	New York Mets	NL	162	91
8	Tampa Bay Devil Rays	AL	161	91
10	Detroit Tigers	AL	162	90
11	Pittsburgh Pirates	NL	161	89
12	Cincinnati Reds	NL	162	86
13	Baltimore Orioles	AL	162	84
14	Cleveland Indians	AL	162	82
	MLB average			80.9
15	Chicago White Sox	AL	162	79
15	Florida Marlins	NL	162	79
17	Philadelphia Phillies	NL	162	76
18	San Diego Padres	NL	162	75
19	Chicago Cubs	NL	162	73
19	Texas Rangers	AL	162	73
21	Oakland Athletics	AL	162	71
21	San Francisco Giants	NL	162	71
23	Anaheim Angels	AL	162	70
23	Houston Astros	NL	162	70
23	Minnesota Twins	AL	162	70
26	Los Angeles Dodgers	NL	162	69
27	Atlanta Braves	NL	162	66
28	Boston Red Sox	AL	162	64
29	New York Yankees	AL	162	61
30	St. Louis Cardinals	NL	162	57

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.