This is the final installment of a 3-part series in which we explain the reasoning behind the stats chosen for the SABR Fantasy Baseball pilot league. We will explore how these stats differ from traditional 5×5 fantasy format, how they contribute to wins for their teams, and how they explain a player’s true value.
Relief Pitching
Traditions 5×5 fantasy formats typically group starting pitcher and relief pitchers stats together: Wins (W), Earned Run Average (ERA), Walks+Hits per Inning Pitched (WHIP), Saves (S), and Strike Outs (SO). We believe the statistics that best value a relief pitcher are not the same as those that best value a starting pitcher. By separating the two we are allowed to focus on the stats that truly define a quality reliever.
SABR Fantasy Baseball utilizes 2 relief pitcher categories (starting pitchers get 4; starting pitchers are more valuable than relief pitchers):
Strikeouts per 9 Innings (K/9): Relievers often enter the game with runners on base so it is essential for your relief pitchers to have strikeout stuff. Pitchers who pitch to contact are more of a risk when in the bullpen and might be better served as a starter or long reliever.
Walks and Hits per Innings Pitched (WHIP): When a reliever comes into a game, often with runners on base, it is important for them to throw strikes and keep runners off base.
The one stat you may notice not used is saves (S). Saves were not included because saves are often a function of the team you play for and not necessarily the quality of the reliever. Mariano Rivera (Yankees) received 26 more save opportunities than Javy Guerra (Dodgers). Relief pitchers who are able to strikeout batters and keep runners off base are a valuable assets to any team; regardless of the inning. Yes, there is a certain makeup that a relief pitcher needs to be a closer but that does not mean a quality 7th or 8th inning guy cannot rise to the occasion when given the chance.