Typically there is no pluralization in Japanese unless specified. For example: この車【くるま】は綺麗【きれい】。 This car is clean. / These cars are clean. Does スポーツ work in the same way? Considering the ...
In my wanderings around Japan giving my kana knowledge some practice I've noticed both the words "ガール" (gāru) and "ガールズ" (gāruzu) in use at least in signage. Obviously they are borrowed from English ...