Has any team lost more than 26 in a row at any level of professional baseball?

The 1875 Brooklyn Atlantics lost 31 consecutive games in the National Association. MLB does not count the National Association as a major league, so that streak sits outside the official record book even though it happened at the top level of the sport at the time.

Does a losing streak stop when the season ends?

Official single-season streaks reset at the end of a season, which is why the record lists are labelled by year. Cross-season futility is tracked separately: the Colorado Rockies lost 22 consecutive series across 2024 and 2025, the longest series losing streak in baseball history.

What is the longest losing streak by a team that still made the playoffs?

Long streaks and postseason berths almost never overlap, because a streak past ten games usually costs more ground in the standings than a contender can recover. Streaks of eight and nine games have happened to eventual World Series winners, but nothing in the record book's territory.

Why do losing streaks get more coverage than winning streaks of the same length?

Because they are rarer at the extremes and the tension builds differently. A 20-game winning streak has a natural cheering audience; a 20-game losing streak turns every game into a national countdown, which is why the 2024 White Sox drew larger road crowds during their skid than before it.

The Longest Losing Streaks in MLB History

The longest losing streak in MLB history is 26 consecutive games, by the 1889 Louisville Colonels of the American Association. In the modern two-league era the record is 23 straight, set by the 1961 Philadelphia Phillies.

This is the exact mirror of the longest winning streaks in MLB history, and the two lists are more symmetrical than you would expect. Baseball’s best streak is 26. Baseball’s worst streak is 26. The sport falls apart in both directions at roughly the same point.

From the scorebook — All-time: 26 (1889 Louisville Colonels). Modern era: 23 (1961 Phillies). American League: 21, shared by the 1988 Orioles and the 2024 White Sox.

The full list of 19-game losing streaks and longer

Streak	Team	Year	Era	Note
26	Louisville Colonels	1889	American Association	Official MLB record
24	Cleveland Spiders	1899	Pre-1900 NL	Same team that went 20-134
23	Pittsburgh Alleghenys	1890	Pre-1900 NL	—
23	Philadelphia Phillies	1961	Modern	Modern-era record
22	Philadelphia Athletics	1890	American Association	—
21	Baltimore Orioles	1988	Modern	Games 1 through 21 of the season
21	Chicago White Sox	2024	Modern	Tied AL record
20	Boston Americans	1906	Modern	—
20	Philadelphia Athletics	1916	Modern	36-117 season
20	Philadelphia Athletics	1943	Modern	—
20	Montreal Expos	1969	Modern	Expansion year
19	Baltimore Orioles	2021	Modern	Most recent 19+ streak before 2024

Four of the top five are pre-1900. That matters, because the American Association and the twelve-team National League of the 1890s had no mechanism to stop a bad team from getting worse — no draft, no waiver claims, no revenue sharing, and in Cleveland’s case an owner actively moving talent to a second club he also owned.

The 1961 Phillies: 23 straight in the modern era

The Phillies’ streak began on 29 July 1961 and ran 23 games. They were already 29 games out of first place when it started. When it ended they were 42 games out.

That detail is the useful one. The streak did not cost the Phillies a pennant; it happened to a team that had nothing left to lose in the standings. Long losing streaks are almost always a symptom of a season that is already over, which is why they cluster in August and September rather than April.

The 1988 Orioles: the worst start in baseball history

The 1988 Baltimore Orioles lost their first 21 games of the season. Not 21 games somewhere in the middle — the first 21, from Opening Day on 4 April to 28 April.

Manager Cal Ripken Sr. was fired six games in and replaced by Frank Robinson. The roster included two future Hall of Famers, Cal Ripken Jr. and Eddie Murray. Baltimore had won the World Series five seasons earlier. The Orioles finally won on 29 April at Comiskey Park and finished the year 54-107.

This is still the record for most consecutive losses to open a season, and it is the closest any team has come to the front end of an 0-162. It also lasted 13% of a season.

The 2024 White Sox: 21 straight, and the record they did break

The 2024 Chicago White Sox lost 21 in a row between mid-July and 5 August 2024, tying the 1988 Orioles for the American League record. They snapped it the next night with a 5-1 win over the Athletics, rookie Jonathan Cannon getting the start, two losses short of the 1961 Phillies’ modern mark.

The streak is not what that season is remembered for. The White Sox went on to finish 41-121, breaking the 1962 Mets’ 62-year-old record for most losses in an MLB season. A team can set the loss record without setting the streak record, and 2024 is the proof — 121 losses spread across a year does not require any single stretch to be historic.

What 26 straight actually represents

Twenty-six consecutive losses is 16% of a 162-game season. To lose every game on the schedule, a team would need to sustain that for more than six times as long, starting on Opening Day and never stopping.

The symmetry with the winning side is exact, because it is the same arithmetic. Twenty-six straight wins by the 1916 Giants is also 16% of a season. The sport’s best-ever hot streak and its worst-ever cold streak are the same length, and both fall enormously short of a full year.

That is the whole argument in one number. The game is built so that neither extreme survives contact with a 162-game schedule. A perfect season needs a winning streak six times longer than any recorded; a winless season needs a losing streak six times longer than any recorded. Neither has happened, and the streak record is the plainest evidence of why.

For the full probability breakdown on the winning side, see why 162-0 is effectively impossible.