"I can't pick between the two," he says regarding the consuming roles rugby and polocrosse play in his life.
Holyoake's father and former North Auckland rugby representative, Henry Holyoake, is supportive of his children and their interest in the sport.
"For the last two years Tawa's sister, Tia, has been in the squad, so he's been playing as her understudy. It was just a matter of time to develop and show his worth," the proud dad said.
New Zealand Polocrosse secretary Raewyn Saunders-Loder said the tour would be a wonderful opportunity for the players.
"They will all benefit and learn during their time away, bringing home with them knowledge, skills, experience and team comradeship to pass on to their peers."
The 2015 Australian Polocrosse Junior Classic is set to run from April 10-12.
Polocrosse for dummies:
-Mix of polo and lacrosse.
-Field consists of six players on at a time, three per team.
-Two-horse minimum for each player.
-Points are scored by sending the ball through the opposition goal.
-Field measures 146.5m by 55m.