Overview
The RBI Leader title is awarded to the batter who accumulates the most runs batted in during the regular season, forming one pillar of the Triple Crown alongside batting average and home runs. RBIs count the runs that score as a direct result of a batter's plate appearance (a hit, a sacrifice fly, a bases-loaded walk and so on), and the stat has been regarded as a straightforward measure of a hitter's contribution to team victories. Winning the RBI title requires not only personal hitting prowess but also a high on-base percentage from the batters ahead in the lineup. Even a powerful cleanup hitter cannot drive in runs without baserunners, making RBIs a stat heavily influenced by team composition and lineup construction. The NPB career record is Sadaharu Oh's 2,170 RBIs (1959-1980, as of September 4, 2026). The single-season record is 161, set by Makoto Kozuru in 1950 (as of the end of the 2025 season). From a sabermetric perspective, RBIs are not treated as a measure that isolates individual ability, because they depend on the uncontrollable variable of baserunner availability. Nevertheless, in fan culture and media coverage, the RBI title retains its prestige as a symbol of clutch performance, and its place as a Triple Crown component remains secure.