It continues a dismal run of performances from the Americans, who have also been beaten 27-0 by France and 8-0 by Spain in Group A at the Roller Skate Park.

Germany scored 15 goals in the first half before adding a further 12 in the second at the Roller Skate Park.

Spain, winners of last year's WorId Championship title in Iquique in Chile, maintained their excellent start.

They brushed aside France 10-1.

In Group B Portugal, World Championships silver medallists, continued their poor form.

After drawing their opening match 2-2 with Chile and losing 5-2 to 2014 champions Argentina, they were once again beaten today.

Italy inflicted even more misery onto their dismal campaign by claiming a 3-2 success.

South American nations Argentina and Chile also clashed and it was the former who prevailed 1-0.

The Games are taking place for the first time in one city, seeing the World Championships of 10 roller disciplines take place simultaneously.

It is due to take place over the course of 15 days featuring different competitions and held at indoor and outdoor facilities.

Events will consist of artistic, speed, rink hockey, inline hockey, roller freestyle, skateboarding, inline freestyle, inline downhill, roller derby and inline Alpine.

It is due to last until September 10.

Around 4,000 athletes from 50 countries are due to compete.