'It's not football. You can't slide tackle': Brian O'Driscoll calls for end to 'blight on the game'

Brian O'Driscoll has appealed to World Rugby to address the "blight on the game" of slide tackles.

The Ireland legend and BT Sport pundit is disappointed by referees' ignoring illegal tackles such as Castres fly-half Benjamín Urdapilleta's knees-first hit before Andrew Conway's disallowed try.