[4] He won the gold medal at the Pan American Junior Championship for under 15-16 held in Ecuador.

[5] Medina competed at the 2010 Youth World Amateur Boxing Championships, being defeated by Indian boxer Devendro Laishram 17–8 in his first fight.

[10] At the games he lost to Joselito Velázquez in the semifinal to finish with the bronze medal in the light flyweight category.

In July 2011, Medina boxed at the 5th CISM Military World Games and was defeated by Indian Nanao Singh 20–18 in the preliminary round of the 49 kg category.

[17][18] In March, Medina was runner-up to Dagoberto Agüero for the Dominican Republic Boxing Federation's Boxer of the Year award.