Who had the best record in MLB history, and what was it?
Most wins, 116, by the 2001 Mariners and the 1906 Cubs. By virtue of playing a shorter schedule, that same Cubs team has the best winning percentage, .763, since the official schedule expanded above 150 games.
I believe it was the Mariners from a few years ago
They won 116 games and lost 46. That's something you probably won't see for years to come.
