By Ewan Murray The rivalry between Chelsea and Leeds United is known for its unbridled ferocity. The feud between these two foes emerged in the 1960s following some hotly-contested clashes, fuelled by the continual battle between England’s north and south. While meetings have been less frequent in the 21st century with Leeds having spent the majority of their lives in the second tier, encounters between the two sides remain just as fierce and bitter as ever. Here is the complete head-to-head record between Chelsea and Leeds, as well as some memorable meetings over the years. Chelsea 1-0 Leeds …