22-year-old Tetevano has signed a two-year extension, keeping him at the Club until 2015.
“Zane has performed well this season and we are pleased to reward him with a new contract,” CEO Matt Gidley said.
“He is a talented young forward and we look forward to his continued development.”
For the three Mata’utia brothers, Chanel has signed for season 2014 and Pat until 2015. 17-year-old Sione was already signed for 2014, but the Club has extended his contract until 2015.
“We are obviously delighted to retain the three brothers here at the Knights,” CEO Matt Gidley said.