But for the rest of the world , handball is a competitive Olympic sport and it 's about to take Rio by storm this summer .
When the average American hears about handball , they think of the sport offered at their local YMCA .
For the rest of the world , handball is a competitive Olympic sport and it 's about to take Rio by storm this summer .
When the average American hears about handball , they think of the sport offered at their local YMCA .