bill james cites wagner's 1908 season as the greatest single season for any player in baseball history. he notes that the league era of 2.35 was the lowest of the dead ball era and about half of the eras of modern baseball. since wagner hit .354 with 109 rbi in an environment when half as many runs were scored as today, he asks, "if you had a gold glove shortstop, like wagner, who drove in 218 runs, what would he be worth?"