List of teams that have overcome 3–0 series deficits

The following is the list of teams that have overcome 3–0 series deficits in a best-of-seven playoff series, otherwise known as a reverse sweep. The listed teams won four consecutive games after losing the first three. Unsuccessful comebacks are also listed, in which teams evened a series after being behind 3–0, then lost game seven of the series.

Background
Three major North American professional sports leagues have playoff series that can reach a seventh game: Major League Baseball (MLB), the National Basketball Association (NBA), and the National Hockey League (NHL). In MLB, only the semi-final League Championship Series and the final World Series are best-of-seven series. In the NBA and NHL, all four rounds of their respective playoffs are best-of-seven series.

In the history of these leagues, teams that were down 3–0 in a series have come back to win the series five times; four times in the NHL and once in MLB. The most recent example is the Los Angeles Kings of the NHL in the 2014 Stanley Cup playoffs. The only instance in the MLB to date was by the Boston Red Sox in the 2004 American League Championship Series. The only instance in a championship finals series was by the NHL's Toronto Maple Leafs in the 1942 Stanley Cup Finals. The NBA is the only league in which this has never happened, to date.

Conversely, eleven teams have evened a series after being behind 3–0, then lost in the final game of the series: six in the NHL, four in the NBA, and one in MLB. The most recent example is the Edmonton Oilers of the NHL in the 2024 Stanley Cup Finals.

No team has overcome multiple 3–0 deficits in a single postseason, although the 1974–75 New York Islanders of the NHL nearly did so; they successfully overcame a 3–0 series deficit in the 1975 quarterfinals, then rallied from a 3–0 series deficit in the semifinals before losing the seventh game.

While seven-game series were traditionally used only for the final series of a postseason, MLB adopted a best-of-seven format in 1985 for the League Championship Series, the NHL followed suit for its first round in 1987, and the NBA did the same for its first round in 2003.

Outside of the noted major North American leagues, various other leagues across multiple sports also use seven-game postseason series. There are several known instances of teams in such leagues overcoming 3–0 series deficits. In other cases, like the Swedish Hockey League, seven-game series are common but no team has yet overcome such a deficit.

Successful comebacks
In Stanley Cup Playoffs history, 211 teams faced a 3–0 deficit in a best-of-seven series. Of these teams, only four overcame the deficit (~2%). Only one overcame the deficit in the Stanley Cup Finals. Three comebacks were completed with game seven away, while the 1942 Toronto Maple Leafs completed the comeback on home ice.

Unsuccessful comebacks
Six other NHL teams have evened a series after being down 3–0, only to lose game seven (~3%). Five of these teams were the visiting team in game seven, while the 1945 Detroit Red Wings were the only home team in game seven.

Successful comebacks
One MLB team has overcome a 3–0 deficit to win the series.

Unsuccessful comebacks
One MLB team has evened a series after being down 3–0, but lost game seven.

Unsuccessful comebacks
There has never been a successful comeback from a 3–0 series deficit in the NBA to date. Of the 157 NBA teams (as of June 17, 2024) that faced a 3–0 deficit, only 4 of them (~3%) forced a game seven which they ultimately lost.

Other leagues
Outside of MLB, the NBA, and the NHL, there are some other known instances of successful comebacks from 3–0 series deficits. The Slovak ice hockey club HK Dukla Trenčín and the Swiss ice hockey club EV Zug are the only teams that managed to overcome a 3–0 deficit twice.

3–0 Comebacks in a best-of-seven with ties
While ties can prolong the series to eight games or more, these are still best-of-seven series in that only seven of the games can have a decisive winner. Four victories still takes the series, thus overcoming a 3–0 deficit is still equally difficult.