プレイヤーズ・リーグ
When Robinson jumped to the Players' League in 1890, playing for the Pittsburgh Burghers, the gap between Robinson's batting average and on-base percentage grew to a remarkable 205 points. During that season, Robinson had 70 hits for a .229 batting average, but his 101 bases on balls elevated his on-base percentage to .434, fourth highest in the Players' League.