The MLB postseason RBI leader market reflects a tightly bunched field driven by early-round sample sizes and multiple contenders from high-powered lineups. Jake Bauers holds the highest implied probability among named options at 25.5 percent amid strong plate appearances for his club, followed closely by Matt Olson and Brice Turang near 19.5 and 15.5 percent, respectively, based on their regular-season RBI totals exceeding 90 and favorable power profiles. Shohei Ohtani, Jo Adell, and others cluster around 13-15.5 percent as teams like the Yankees, Braves, and Padres advance, with Ben Rice already posting six RBIs in limited action. Limited games played, varying lineup spots, and potential for multi-game series keep outcomes volatile without a clear frontrunner emerging yet.