Donawa began competing in track and field at the age of 14, winning a bronze medal in the boys' under-17 triple jump at the 2011 CARIFTA Games. He returned at the 2012 CARIFTA Games, winning a gold medal in the event with a jump of 14.63 metres. Donawa qualified for the 2012 Central American and Caribbean Junior Championships in Athletics, finishing second in the Male Junior B category. He also competed in the 2013 World Youth Championships in Athletics, placing seventh in the triple jump with a personal best of 15.65 metres.