Dee ihe ga-aga n'ihu na paragraf a - Callum O'Brien (amụrụ na 4 Nọvemba 1982) bụ onye ọkpụkpọ squash na New Zealand. O ruru ọkwa kachasị elu nke 61 n'ụwa. Ọ nọchitere anya obodo ya na Commonwealth Games n'afọ 2006