Complex sentence: Mares, who was undefeated coming into the bout with 15 wins and 0 losses, stopped Gabi in his tracks in just two rounds, marking the farewell of the uncrowned'Prince', Diosdado Gabi, who later retired from the sport after the bout.
Split into simpler sentences: Mares, who was undefeated coming into the bout with 15 wins and 0 losses, stopped Gabi in his tracks in just two rounds. This marked the farewell of the uncrowned'Prince', Diosdado Gabi, who later retired from the sport after the bout.