The 2026 MLB postseason stolen bases race remains wide open, with top candidates clustered between roughly 10-16% implied probability due to limited games played and the potential for any active speedster to surge. Jazz Chisholm Jr. and Ronald Acuña Jr. lead early with three steals apiece, while players such as Chandler Simpson, José Caballero, Jackson Chourio, Brice Turang, Michael Harris II, and Fernando Tatis Jr. sit close behind on contending clubs still advancing in the bracket. Short series lengths, varying lineup spots, and matchup-specific opportunities for aggressive baserunning keep the field competitive, as one multi-steal outing or injury can shift the leaderboard quickly before the World Series concludes.