Question: Who won the most baseball games in a season?
Disambiguated questions and answers: question: Which pitcher has the most wins in a baseball season?
Which manager has the most wins in a baseball season?
Which owner has the most wins in an baseball season?
Who has the record for most wins in a single baseball season?
answer: Charles "Old Hoss" Radbourn
Lou Piniella
Hiroshi Yamauchi
1906 Chicago Cubs
Natural Questions answer: Chicago Cubs (from the Wikipedia article "List of best Major League Baseball season win-loss records")