Boston Red Sox
125 seasons | 10044-9336 (.518) | 9 Championships
The Boston Red Sox have played since 1901, a total of 125 seasons. The franchise's all-time record is 10,044-9,336 (.518). They have won 9 World Series titles. The franchise has played under more than one name or in more than one city: Boston Americans and Boston Red Sox.
- W (Wins):
- Games credited to a pitcher whose team took a lead it never surrendered while he was the pitcher of record.
- L (Losses):
- Games charged to the pitcher of record when the opposing team took a lead it never surrendered.
- Win% (Winning Percentage):
- Wins divided by games decided.
Data updated
🏆 Championships (9)
📊 Quick Stats
📈 Best & Worst Single Seasons
📂 Quick Links
⭐ All-Time Leaders
🏆 Playoff History (41)
📅 Season History
125 seasons on record
Wins per season — gold bars are World Series wins, silver are pennants.
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The Boston Red Sox franchise in brief
Across 125 seasons from 1901 to 2025, the Boston Red Sox franchise has a 10044-9336 record, a .518 winning percentage. The season history shows the franchise under these names: the Boston Americans (1901-1907) and the Boston Red Sox (1908-2025). The season list starts at 79-57 in 1901 and ends at 89-73 in 2025. The 9 World Series titles came in 2018, 2013, 2007, 2004, 1918, 1916 and earlier years back to 1903. The latest championship came in 2018, by 4-1 in the Series. The quick stats count 26 postseason seasons. In 2025 the club lost the AL Wild Card round, the newest entry in the playoff history.
The season history peaks at 105-47 in 1912 and bottoms out at 43-111 in 1932. The best team batting average came in 1950, .301, against a league average of .270; the low was .233 in 1905. Pitching peaked in 1904, with a 2.12 team ERA against the league's 2.60, against a worst of 5.58 in 2020. For run scoring, 1950 leads the franchise callouts with 1027; the 2020 team scored the fewest, 292. Carl Yastrzemski (1961-1983), Dwight Evans (1972-1990), and Ted Williams (1939-1960) played the most games for the club. The notable players list continues with Bobby Doerr, Harry Hooper, and Wade Boggs. The season list runs back from 2025 to 1901.
Boston Red Sox: Frequently Asked Questions
- How many World Series have the Boston Red Sox won?
- The Boston Red Sox have won 9 World Series titles.
- What is the all-time record of the Boston Red Sox?
- The Boston Red Sox are 10,044-9,336 (.518) all-time across 125 seasons.
- When were the Boston Red Sox founded?
- The franchise's first major league season was 1901, and its last was 2025.
- What was the best season in Boston Red Sox history?
- By winning percentage, the franchise's best season was 1912, when the team went 105-47.
- Have the Boston Red Sox always played in the same city?
- No. The franchise has played under these names and cities: Boston Americans and Boston Red Sox.