In October 2016, DEF Promotions held Battle of Victors, the second event organised with legendary promoter Bob Arum and Top Rank Inc. With 5000 seats sold, including attendance by Bob Arum himself and plenty of other notable people such as Jasper Tsang, former President of HKSAR Legislative Council, and Chan Chi-wan, Chief Advisor of Commercial Radio Hong Kong, it proved to be a huge success.
This 7-bout event featured boxers from 8 countries: Hong Kong, Japan, Australia, Philippines, Thailand, Indonesia, Macau, and the United Kingdom.
The main bout featured Rex “The Wonder Kid” Tso (19-0-0), who faced Ryuto Maekawa (11-0-1). Rex successfully defended his WBC Asian Boxing Council Super Flyweight title, and won the World Boxing Organisation International Junior Bantamweight via a ten-round unanimous decision.
This event also featured Raymond Poon (1-0-0) winning his second fight via a third round technical knockout over Pakpoom Hammarach (6-10-0).