As the passing game evolved, a second wide receiver position was added. While it is possible to move the opposite end out wide for a second split end position most teams preferred to leave that end in close to provide extra blocking protection on the quarterback's blind side. That player was essentially playing the modern day tight end position. Instead of moving the blind side end out, one of the three running backs was split wide instead, creating the flanker position. The flanker lined up off the line of scrimmage like a running back or quarterback, but split outside like a split end. Lining up behind the line of scrimmage gave flankers some advantages. Flankers have more "space" between themselves and a pressing defensive back, so cornerbacks can not as easily "jam" them at the line of scrimmage. This is in addition to being eligible for motion plays, allowing for the flanker to move laterally before and during the snap. Elroy "Crazy Legs" Hirsch is one of the earliest players to successfully exploit the potentials of the flanker position as a member of the Los Angeles Rams during the 1950s.