 Complete the following phrase:  Herdez entered Boxing Qualification for the 2016 Summer Olympics. Despite two failed attempts to qualify for the U.S. Olympic Team, Herdez persisted, qualifying in March, 2016. At the 2016 American Boxing Olympic Qualification Tournament held in Buenos Aires, Argentina, he won the silver medal in the mens flyweight. He defeated Argentinas Leandro Blanc in the semifinals to secure his place in the 