The spear tackle. A wince-worthy, horrifying act which involves a player being dumped over the horizontal and driven into the ground. Thankfully, we see very few of them these days.
This one, however, remains perhaps the worst seen on a field and has been condemned as a complete and utter disgrace to the sport. There are shades of Tana Umaga's horrific spear on Brian O'Driscoll on the Lions tour in 2005, only this is far worse.
Allan MacMahon of the Balmain Tigers picks up Newtown Jets' Mick Ryan and launches him head-first into the ground in a piledriver move that belongs in a WWE wrestling ring.