I would guess the Cincinnati Redlegs because they were the first pro Baseball team and baseball teams play a lot more games than do football and Basketball teams.
The Giants have the most franchise wins but they have been with a couple of different cities. The Chicago Cubs are second. They are both over 10,000 wins but the Giants have about 200 more.
Steelers
Cubs
Pittsburgh Steelers.
lakers
The cubs!
Brazil have won the most games.
The Boston Celtics With 17 baby
The Montreal Canadiens have won the most games in the playoffs in NHL history.
Celtics
twins
The Michigan Wolverines won 869 games
Probably the New York Yankees, with the most World Series games won in history.