A light-hitting defensive specialist, Rariden set the major league record for most assists by a catcher in a single season with 215 while playing for the Newark Pepper of the Federal League in 1915.[2] He broke his own record the following season when he had 238 in 1915.[2]Major League status was retroactively applied to the Federal League in 1968.
Before Rariden's career, most catchers were large, slow-footed players.[3] Rariden's small size and agility helped him become one of the best catchers in major league baseball.[3] In the Deadball Era during which Rariden played, catchers played a huge defensive role, given the large number of bunts and stolen base attempts, therefore catchers of his era usually accumulated higher assist totals than did those of subsequent eras.[4]
In a twelve-year major league career, Rariden played in 982 games, accumulating 682 hits in 2,877 at bats for a .237 career batting average along with 7 home runs and 275 runs batted in.[1] He ended his career with a .972 fielding percentage.[1] Rariden led Federal League catchers twice in putouts, twice in assists and twice in baserunners caught stealing.[1] He led National League catchers once in putouts.[1]