Dunlap's career range factor of 6.31 at second base still ranks as the fifth highest in the history of Major League Baseball. However, Bill James, in his 2001 book "The New Bill James Historical Baseball Abstract", ranked Dunlap as the 89th greatest second baseman of all time (and the 8th best of those who played the majority of their careers in the 19th century). James wrote that Dunlap was "never a legitimate star in a legitimate major league, but a good second baseman and a .275 hitter."