Reflecting on his first ton at any level after five stints in the camp, the Hastings Christian School Year 9 pupil this year says he and his father spent countless hours in the nets every day, sometimes twice in one day. The Andy Reeves-coached Year 8s were undefeated yesterday to finish at the top of the table.
Clark was a picture of patience on the crease, playing "every ball on its merit".
"I made sure every bad ball was hit well on the ground or over the top."
He thinks it will be amazing to make the Black Caps some day or "that sort of thing".
As captain, Clark enjoyed "the positive feeling" leading his troops on to the park to field.
He claimed a five-wicket bag against Wellington Collegians in the third game on day two.
His grandfather, who died almost two years ago, had Parkinson's syndrome and was blind. As a youngster, he would visit him at his home in Hastings and often talked about cricket for a couple of hours.
"My grandma is probably my biggest supporter and has been to every game of mine," he says, adding she also gave him a hug after the commotion had subsided at the park.
Brad switched from rugby to cricket to play alongside his son in the men's third grade Havelock side "before he [William] becomes too good for me - I think he has".