Ma'anar ƙamus na "mai wasan ƙwallon ƙafa na farko" ɗan wasan ƙwallon kwando ne wanda ke buga matakin tsaro na tushe na farko, wanda ke gefen hagu na tushe na biyu kuma kusa da ƙasa mara kyau. Babban alhakin ɗan wasan ƙwallon ƙafa na farko shine jefa ƙwallan ƙasa da aka buga a gefen dama na cikin filin da kuma kama jifa daga sauran masu fala. Bugu da ƙari, ɗan wasan ƙwallon ƙafa na farko yawanci mai bugun wuta ne a cikin tsarin batting ɗin ƙungiyar kuma ana tsammanin zai buga duka matsakaici da ƙarfi.