Since the 1970 season, a manager has been replace mid-season 168 times. 12 of those teams made the playoffs. In the wild card era (1995 on), 39 managers have been replaced mid-season. 3 of those teams made the playoffs (one of those being Tommy Lasorda's last season with the Dodgers). Yes the 2003 Marlins won the World Series after making a mid-season managerial switch, but, again, that's the exception, not the rule. you snipped out a critical phrase in my quote, that the team has to have the players in place that can perform. Most of those teams were bad, and didn't have a chance with any manager. I would think MOST underperforming teams did better after a managerial change, merely because you could expect some movement towards expectations. I'd take a .550 winning percentage the rest of the way, even if that didn't get the brewers in the playoffs.