Entered baseball's Major Leagues in 1897 with Louisville and played infield and outfield positions. When Pittsburgh replaced Louisville in the National League, anchored himself at shortstop with the Pirates. Called the "Flying Dutchman" by his fans and came to be regarded as one of the outstanding players of baseball. Led the National League in batting eight times, had a lifetime batting average of .329, made 3,430 base hits, and scored close to 1,800 runs. Wagner, agile though massively built, excelled at fielding; also led the National League five times in stolen bases. In 1917, retired from baseball, but returned to the Pirates as coach (1933–52). In 1936 he was elected to the National Baseball Hall of Fame.