Complex sentence: The blown save is not an officially recognized statistic by Major League Baseball, but analysts and sportscasters count blown saves to characterize the "record" of closers analogous to win-loss records of starters.
Split into simpler sentences: The blown save is not an officially recognized statistic by Major League Baseball. But analysts and sportscasters count blown saves to characterize the "record" of closers in a way that's analogous to won-loss records of starters.