Top Rank’s best youngster?

Abdullah Mason just made another big statement, stopping Albert Bell in the 12th round to defend his WBO lightweight title and move to 21-0. At just 22, he looks like the face of Top Rank’s next generation - but he is not alone.

Xander Zayas, Emiliano Vargas and several other young names are also pushing to become the promotion’s next star. So who is Top Rank’s best young fighter right now?