The Top 10 Worst Franchises in MLB History

No. 10 Washington Nationals/Montreal Expos: .477 Winning Percentage

DENVER - JULY 06: Manager Jim Tracy #4 of the Colorado Rockies reviews the ground rules with manager Manny Acta #14 of the Washington Nationals and homeplate umpire Angel Hernandez (C) prior to the game during MLB action at Coors Field on July 6, 2009 in

No. 9 Milwaukee Brewers: .475 Winning Percentage

MILWAUKEE - 1989: Robin Yount #19 of the Milwaukee Brewers bats during a game in the 1989 season at County Stadium in Milwaukee, Wisconsin. (Photo by Jonathan Daniel/Getty Images)

No. 8 Florida Marlins: .475 Winning Percentage

NEW YORK - MAY 31: Hanley Ramirez #2 of the Florida Marlins in action against the New York Mets during their game on May 31, 2009 at Citi Field in the Flushing neighborhood of the Queens borough of New York City. (Photo by Al Bello/Getty Images)

No. 7 Baltimore Orioles: .475 Winning Percentage

No. 6 Colorado Rockies: .472 Winning Percentage

DENVER - JULY 12: Relief pitcher Jorge De La Rosa #29 of the Colorado Rockies is removed from the game by manager Jim Tracy #4 as catcher Yorvit Torrealba #8 looks on against the Atlanta Braves during MLB action at Coors Field on July 12, 2009 in Denver,

No. 5 Seattle Mariners: .471 Winning Percentage

BOSTON - JULY 05: Ken Griffey Jr #24, Franklin Gutierrez #21 and Kenji Johjima #2 of the Seattle Mariners are congratulated by teammates in the dugout after scoring in the fourth inning against the Boston Red Sox on July 5, 2009 at Fenway Park in Boston,

No. 4 Philadelphia Phillies: .470 Winning Percentage

No. 3 Texas Rangers: .469 Winning Percentage

ANAHEIM, CA - JULY 08: Andruw Jones #25 of the Texas Rangers celebrates with teammates after the game with the Los Angeles Angels of Anaheim on July 8, 2009 at Angel Stadium in Anaheim, California. Jones hit three home runs in the game as the Rangers wo

No. 2 San Diego Padres: .461 Winning Percentage

7 Oct 2001: Right fielder Tony Gwynn #19 of the San Diego Padres acknowledges the crowd during the Major League Baseball game against the Colorado Rockies at Qualcomm Stadium in San Diego, California. The Rockies defeated the Padres 14-5. Mandatory Cre

No. 1 Tampa Bay Rays: .423 Winning Percentage

BALTIMORE - APRIL 12: Evan Longoria #3 of the Tampa Bay Rays in congratulated by Carlos Pena #23 after hitting a home run in the eighth inning against the Baltimore Orioles on April 12, 2009 in Baltimore, Maryland. (Photo by Greg Fiume/Getty Images)