In 2004, he competed at the Youth World Championship in Jeju, South Korea, losing in the round of 32 to Hoandry Lomba from Cuba. Donovan competed at the 2005 World Championships in Mianyang, China. He defeated featherweight Arash Usmanee of Canada on points (31:12), but lost in the second round against Viorel Simion of Romania on points (25:40), which he left and finished ninth overall.