Top MLB Winning Percentages (by Division)

American League East
New York Yankees - 0.597
Boston Red Sox - 0.568
Toronto Blue Jays - 0.497
Baltimore Orioles - 0.431
Tampa Bay Rays - 0.429

American League Central
Minnesota Twins - 0.532
Chicago White Sox - 0.528
Cleveland Indians - 0.504
Detroit Tigers - 0.450
Kansas City Royals - 0.415

American League West
Los Angeles Angels of Anaheim - 0.556
Oakland Athletics - 0.550
Seattle Mariners - 0.517
Texas Rangers - - 0.479

National League East
Atlanta Braves - 0.551
Philadelphia Phillies - 0.525
New York Mets - 0.504
Florida Marlins - 0.501
Washington Nationals - 0.439

National League Central
St Louis Cardinals - 0.564
Houston Astros - 0.514
Chicago Cubs - 0.499
Cincinnati Reds - 0.463
Milwaukee Brewers - 0.457
Pittsburgh Pirates - 0.421

National League West
Los Angeles Dodgers - 0.532
San Francisco Giants - 0.528
Arizona Diamondbacks - 0.497
Colorado Rockies - 0.474
San Diego Padres - 0.474