Australia has been beaten 57-54 by the USA in the semi final of the World Wheelchair Rugby Challenge, being held alongside the World Cup in London this week. After defeating Japan, England and France in their pool matches, the Australians left their worst performance for their most important match against the three time Paralympic gold meddalists. “It was probably our worst performance in quite some time to be honest, we were very undisciplined but it’s a work in progress I guess,” Australian coach Brad Dubberley told Rugby News. “I’m not disappointed that we lost, I’m disappointed by how we played. It was undisciplined and uncharacteristic and the US played really well, but maybe it was the loss we needed to have ahead of Rio.” Australia now faces Japan in the 3rd/4th playoff overnight, after they went down to Canada in the other semi final. “We’ve played them a fair bit over the last few years so we’ll be confident but we’ll definitely need to play better t