All winning streaks of 15 years or longer in Major League Baseball according to the Elias Sports Bureau:
All winning streaks of 15 years or longer in Major League Baseball according to the Elias Sports Bureau:
| Streak | Team | Years |
| 39 | New York Yankees | 1926-64 |
| 18 | Baltimore Orioles | 1968-85 |
| 17 | Chicago White Sox | 1951-67 |
| 17 | New York Yankees | 1993-2009 |
| 16 | Boston Red Sox | 1967-82 |
| 15 | Pirates | 1899-1913 |
| 15 | St. Louis Cardinals | 1939-53 |
| 15 | Atlanta Braves | 1991-2005 |
And all the losing streaks of 15 or more:
| Streak | Team | Years |
| 17 | Pirates | 1993-2009 |
| 16 | Philadelphia Phillies | 1933-48 |
| 15 | Boston Red Sox | 1919-33 |
| 15 | Philiadelphia/Kansas City Athletics | 1953-67 |
The longest all-time losing streaks in the other three sports:
| Streak | Team | Years |
| 15 | Vancouver Canucks, NHL | 1976-91 |
| 15 | Kansas City/Sacramento Kings, NBA | 1983-98 |
| 14 | Tampa Bay Buccaneers | 1983-96 |
And the longest active losing streaks:
| Streak | Team | Years |
| 8 | Detroit Lions, NFL | 2001-09 |
| 8 | New York Knicks, NBA | 2001-09 |
| 3 | Los Angeles Kings, NHL | 2006-09 |