Most 100-loss seasons in a row

[Brownieand45sfan]

Looks like four by the Mets from 62-65

AL Record would be three by the Browns in the 10's and the Red Sox in the 30's.

Anybody see any more? Any 19th century?

[gojays]

The Blue Jays also lost 100 three years in a row, from 77-79.

[geezer]

The Phillies lost 100 games or more 5 straight years (1938-1942)

[Trivia Guy]

The Royals lost over 100 each year form 2004 to 2006.

[Utter Chaos]

AL
4 Washington Senators 1961-64
3 St.Louis Browns 1910-12
3 Philadelphia A's 1919-21
3 Boston Red Sox 1925-27
3 Toronto Blue Jays 1977-79
3 Kansas City Royals 2004-06

NL
5 Philadelpha Phillies 1938-42
4 Boston Braves 1909-12
4 New York Mets 1962-65
3 Boston Braves 1922-24
3 Pittsburgh Pirates 1952-54