Re: Joe Posnanski with more data showing that closers simply don't matter
I'm not sure this shows that closers don't matter. This just shows average winning percentage for teams with leads of 1-3 runs. Presumably, teams with good closers have winning percentages above the league average and teams with bad closers have winning percentages below league average; when the team leads by 1-3 runs in the 9th. That difference in winning percentage would add up to quite a few games over a 162 game season.