A cikin wasannin da yawa, sandunan ƙwallon ƙafa suna a kowane ƙarshen filin wasa, akwai ginshiƙai guda biyu (ko tsaye) waɗanda ke tallafawa sandar kwance. A wasu wasannin, kamar ƙwallon ƙafa ko hockey, makasudin shine a wuce ƙwallon ko puck tsakanin ginshiƙan da ke ƙasa da sandar ƙetare, yayin da a wasu, kamar waɗanda suka dogara da rugby, dole ne ƙwallon ya wuce kan sandar ƙetare maimakon. Tambaya: Menene babban maƙasudin wasan hockey ko ƙwallon ƙafa?
wuce da ball ko puck tsakanin posts kasa da crossbar