clog fighting/shin kicking contests were widely practiced by local colliers in South East Lancashire during 1800's. Bolton, Rochdale, Bury, Wigan, Salford, Oldham and other areas. There were famous Pendlebury Purrers Two combatants stripped to their waists would apply hold of each other shoulders (and elbows) and will kick each others shins. The loser was the one who fell on the ground first, or gave up, or even released the initial hold. Those were the rules to the best of my knowledge. I have heard that contests continued illegaly till 1950's. Thanks.