By Harry Davies Muhammad Ali’s grandson Biaggio Ali Walsh won an unentertaining decision in his professional MMA debut. Ali Walsh, 25, had already fought seven times as an amateur going into his professional fight against Emmanuel Palacio at the PFL vs Bellator Championships event in Saudi Arabia. The grandson-of-a-legend was known for his knockout power with all of his six amateur wins coming by knockout. There were roars from the Riyadh crowd in the opening 10 seconds of the fight as Ali Walsh showed he isn’t just a striker by taking Palacio to the ground. Palacio landed a good knee after ge…