Certainly not the record, but worth mentioning (to me, anyway).. my Montreal Spectres prog. league team:
1981 was the watershed year for Montreal. Midyear, we traded Greg Luzinski to the AL New York franchise for a 2nd round draft choice and a rookie SS. That rookie SS blasted the ball for half a season and the trade of the Bull forced the Roenicke/Lowenstein platoon into motion. They provided a spark that led to a 10-2 record in the last round of divisional play and a division championship, albeit with a losing record (79-83). Montreal swept Houston in three games to start the playoffs, then beat the Los Angeles Looters in six games to advance to the World Series. Facing the powerful Texas Superspurs in the World Series, we fell behind 3 games to 1 but rallied to win the final three and steal the championship!