Who won the most baseball games in a season?
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Which pitcher has the most wins in a baseball season?
Charles "Old Hoss" Radbourn
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Which manager has the most wins in a baseball season?
Lou Piniella
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Which owner has the most wins in an baseball season?
Hiroshi Yamauchi
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Who has the record for most wins in a single baseball season?
1906 Chicago Cubs
List of Major League Baseball career wins leaders
https://en.wikipedia.org/wiki/List%20of%20Major%20League%20Baseball%20career%20wins%20leaders
List of best Major League Baseball season win-loss records ...
https://en.wikipedia.org/wiki/List%20of%20best%20Major%20League%20Baseball%20season%20win-loss%20records
List of Major League Baseball annual wins leaders
https://en.wikipedia.org/wiki/List%20of%20Major%20League%20Baseball%20annual%20wins%20leaders
The 1906 Cubs won 116 games, finishing 116–36 and posting a modern-era record winning percentage of .763, before losing the World Series to the Chicago White Sox ("The Hitless Wonders") by four games to two.
Chicago Cubs
The Seattle Mariners' 2001 season was the 25th since the franchise's inception. The Mariners finished with a 116–46 (.716) record, tying the major league record for wins set by the 1906 Chicago Cubs, and setting the record for wins by an American League team.
2001 Seattle Mariners season
Following his playing career, Piniella became a manager for the Yankees (1986–1988), Cincinnati Reds (1990–1992), Seattle Mariners (1993–2002), Tampa Bay Devil Rays (2003–2005), and Chicago Cubs (2007–2010).
Lou Piniella
In the early 1990s, the professional baseball team the Seattle Mariners were available for sale and United States Senator Slade Gorton asked Nintendo of America to find a Japanese investor who would keep the club in Seattle. Yamauchi offered to buy the franchise, even though he had never been to a baseball game. Although the owner accepted the offer, the MLB commissioner Fay Vincent and ownership committee were strongly opposed to the idea of a non-North American owner and did not approve the deal. However, following the strong support and sentiments of the people of Seattle and press the commissioner formally approved the deal, under the condition that Yamauchi had less than 50% of the vote.
Hiroshi Yamauchi Ownership of the Seattle Mariners
During the 1884 season, Radbourn won 60 games, setting an MLB single-season record that has never been broken, or even seriously approached.
Charles Radbourn
The record for most games won in a single baseball season is 116 wins, held by both the 1906 Chicago Cubs and the 2001 Seattle Mariners. During this record-tying season, the Mariners were managed by Lou Piniella and owned by Hiroshi Yamauchi. The pitcher who has won the most games in a single MLB season was set in 1884 by Charles "Old Hoss" Radbourn at 60 wins, a record which has never been broken or even seriously approached.