The MLB postseason RBI leader market reflects an exceptionally tight race, with dozens of hitters clustered at or near 50% implied probability. This pricing captures the depth of the 2026 playoff field, where no single player has separated statistically through the regular season’s final weeks or early postseason games. Strong September form from multiple contenders, including consistent run production from teams like the Dodgers, Padres, Braves, and Cubs, has kept several bats in striking distance. Health of lineup regulars, favorable matchups against postseason pitching staffs, and the potential for extended series have further compressed the probabilities, leaving room for late surges by players with proven RBI track records in high-leverage situations.