It took nothing less than a US Ryder Cup win to bring a truce to golfs biggest feud on Sunday as Bryson DeChambeau and Brooks Koepka celebrated the victory over Europe with a hug while their team mates belted out the 1970s hit, Why Cant We Be Friends?Much of the build-up to the Ryder Cup had focused on the hostility between the two major winners and there were concerns in the US camp that it would be a source of friction