Boxing Legends TV takes a look at the times when the hardest punchers in boxing collided in the ring. This is part 2 and it features two ultimate heavyweight . Boxing Legends TV takes a look at the times when the hardest punchers in boxing collided in the ring. This is part 1 and it features 3 of the most brutal knockout . Boxing Legends TV takes a look at the times when the hardest punchers in boxing collided in the ring. This is part 3 and it features Mike Tyson, David Tua and . The most action packed boxing video on youtube. Join Boxing Legends TV as we count down the Top 10 most brutal rounds in boxing history HD 60fps 2016 .