Finding a World Series winner is simple when the year, finalist and final result appear together. The championship record also has a few important exceptions: its earliest edition used a different format, one series included a tie, and some seasons ended without a World Series at all.
The reference below brings together the documented entries available here. A dash means that detail is not included in this record, so the table should be read as a selective guide rather than a complete season-by-season register.
World Series winners by year
For most readers, the fastest route is to scan by year and use the finalist column to distinguish a championship run from a club’s other postseason appearances. The selected entries below include early landmarks, a notable title from the 2010s and the most recent championship results.
| Year | World Series winner | Runner-up or finalist | Series result or format note |
|---|---|---|---|
| 1903 | — | Boston Americans vs Pittsburgh Pirates | Best-of-nine World’s Championship Series |
| 1907 | — | — | Five-game series with one tied game |
| 2017 | Houston Astros | — | — |
| 2022 | Houston Astros | Philadelphia Phillies | — |
| 2023 | Texas Rangers | Arizona Diamondbacks | — |
| 2024 | Los Angeles Dodgers | New York Yankees | — |
| 2025 | Los Angeles Dodgers | Toronto Blue Jays | Dodgers won 4–3 |
A result such as 4–3 identifies a full seven-game contest, while older records can require more care. The 1903 series was not played under the modern best-of-seven arrangement, and the 1907 record includes a tie alongside its scheduled games.
Recent World Series champions
The latest results show a changing run of finalists, with the Dodgers appearing in consecutive championship series after the Rangers and Astros won the two preceding titles.
| Year | Champion | Runner-up | Recorded result |
|---|---|---|---|
| 2022 | Houston Astros | Philadelphia Phillies | — |
| 2023 | Texas Rangers | Arizona Diamondbacks | — |
| 2024 | Los Angeles Dodgers | New York Yankees | — |
| 2025 | Los Angeles Dodgers | Toronto Blue Jays | Dodgers won 4–3 |
Houston’s 2022 championship followed its 2017 title, while Texas’s 2023 win placed a different club at the top of the record the following year. Los Angeles then won in both 2024 and 2025. The 2025 final is the only recent entry here with a recorded games-won result: the Dodgers took the series four games to three over Toronto.
How the World Series began
The first modern World Series was played in 1903. It matched the Boston Americans, the American League pennant winners, with the Pittsburgh Pirates, who had won the National League pennant. That pairing established the basic idea of a championship series between the league winners, but the event did not yet resemble the familiar modern format in every respect.
- 1903: A best-of-nine beginning. The inaugural modern series was known as the World’s Championship Series and used a best-of-nine format. That is a key point when reading early championship records: a series result from this period cannot automatically be interpreted through the modern best-of-seven lens.
- 1904: No championship series. The National League champion New York Giants declined to play the American League champion Boston Americans, so no World Series took place.
- 1907: A tie entered the record. The 1907 World Series was a five-game series that included one tied game. It is an early reminder that historical series records can contain outcomes that do not fit a straightforward win-loss summary.
These early examples matter because a year-by-year list is more than a roll call of champions. It is also a record shaped by the rules and arrangements in force at the time. The 1903 format, the absence of a 1904 series and the tied game in 1907 each affect how those seasons sit beside later championships.
Years without a World Series and unusual series formats
Two missing or exceptional points in the record are especially useful when scanning championship history. In 1904, the series did not proceed because the Giants declined the proposed matchup with the Boston Americans. The gap is therefore not a vacant championship won by another club; it is a season without a World Series.
- 1903: The first modern series was best-of-nine rather than best-of-seven.
- 1907: One game ended tied within a five-game series.
- 1994: The World Series was cancelled in connection with the players’ labor stoppage.
When comparing title histories, it helps to separate a cancelled series from an ordinary postseason defeat. Likewise, an unusual early format should not be treated as if every championship was decided under the same conditions as a modern series.
Franchises with the most World Series titles
The New York Yankees have won more World Series titles than any other franchise. That position gives the Yankees a distinct place in any broad view of championship history, whether the reader is tracing individual winners or comparing the weight of different clubs’ records.
Los Angeles sits among the leading championship franchises as well. After the 2024 World Series, the Dodgers were tied with the San Francisco Giants for fifth place among clubs with the most championships. Following the 2025 season, 14 teams had won at least three World Series titles, illustrating how a relatively small group of franchises accounts for multiple championships across the history of the event.
A title table is most useful when it is read in both directions: one season identifies a champion, while the wider franchise record shows whether that win was an isolated landmark or part of a longer championship tradition.
Current franchises still seeking a first title
The Seattle Mariners have never won a World Series. They have also never appeared in one, which makes their position different from that of a club that has reached the championship series but fallen short of a first title.
That distinction is worth keeping in mind when reading lists of title droughts. A franchise can be waiting for another championship, seeking its first championship after a previous World Series appearance, or still pursuing its first appearance on the sport’s biggest postseason stage. For Seattle, both milestones remain open.
