RESEARCH: Rosterable middle reliever thresholds

Middle relievers have historically provided end-of-the-season value by accumulating some counting stats (Wins, Saves, and Strikeouts) while providing elite rate stats (WHIP and ERA). Owners balk at rostering them for several possible reasons. First, owners have always picked sexy starters and can’t change. Other times, it may be tough to take on fewer counting stats. No matter the reason, middle relievers don't get much love. 

The deal is that it’s tough to pick out the next “great” middle reliever. They are easy to spot after the fact—like Andrew Miller or Josh Hader. Coming into a season, the task is more difficult but their ownership climbs during the season. Owners are so focused on Saves and rostering that next big starter, they...

Almost!

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