Nutley, NY (Yuli 29, 2015) – Makon da ya gabata a Las Vegas, kama da National Jr. Golden Guanto gasar a cikin 13-14 shekara daya; 90 laban nauyi aji.

Mielnicki ci Jaylan Walker na California 2-1, Patick Cody na Washington 3-0 da kuma Eric Tudor na Florida 3-0 da ya lashe da 4th National suna.

Mielnicki aka horar da Willie Mũsã da jiragen kasa a Elite Heat Gym a Newark, New Jersey