KZ Okpala’s 10-inch growth spurt in high school didn’t shock his Nigerian-born parents, Martin and Mary Okpala. They had seen his older brother shoot up to 6-7 in high school. His brother attended UC Riverside but didn’t play there. KZ’s two older sisters were tall, too. Chisom, who stands 6-2, was an All-Big West volleyball player at Long Beach State For all anybody knows, KZ still might be growing.