2006 MLB Losses by Team

The Tampa Bay Devil Rays led all of MLB in losses in 2006, with 101, 1 ahead of the Kansas City Royals. The average across 30 MLB teams is 81.0.

Led all of MLB in 2006 Tampa Bay Devil Rays 162 games

101 Losses 1 clear of Kansas City Royals

#	Team	League	G	L
1	Tampa Bay Devil Rays	AL	162	101
2	Kansas City Royals	AL	162	100
3	Chicago Cubs	NL	162	96
4	Pittsburgh Pirates	NL	162	95
5	Baltimore Orioles	AL	162	92
6	Washington Nationals	NL	162	91
7	Milwaukee Brewers	NL	162	87
8	Arizona Diamondbacks	NL	162	86
8	Colorado Rockies	NL	162	86
10	San Francisco Giants	NL	161	85
11	Cleveland Indians	AL	162	84
11	Florida Marlins	NL	162	84
11	Seattle Mariners	AL	162	84
14	Atlanta Braves	NL	162	83
15	Cincinnati Reds	NL	162	82
15	Texas Rangers	AL	162	82
	MLB average			81.0
17	Houston Astros	NL	162	80
18	St. Louis Cardinals	NL	161	78
19	Philadelphia Phillies	NL	162	77
20	Boston Red Sox	AL	162	76
21	Toronto Blue Jays	AL	162	75
22	Los Angeles Dodgers	NL	162	74
22	San Diego Padres	NL	162	74
24	Los Angeles Angels of Anaheim	AL	162	73
25	Chicago White Sox	AL	162	72
26	Oakland Athletics	AL	162	69
27	Detroit Tigers	AL	162	67
28	Minnesota Twins	AL	162	66
29	New York Mets	NL	162	65
29	New York Yankees	AL	162	65

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.