Jan 1973; Unknown Location; FILE PHOTO; Miami Dolphins running backs (left to right) #21 Jim Kiick, #39 Larry Csonka, #22 Eugene “Mercury” Morris during their undefeated season. Mandatory Credit: Photo By Tony Tomsic-US PRESSWIRE (c) Copyright 1973 Tony Tomsic [Photo via NewsCom] ORG XMIT: ORG XMIT: MER0706201429271114