"This he did, O'Sullivan mesmerising team boss Trevor Carlin with the smoothness of his onboard footage as he stroked to two pole positions in qualifying, converting both of them into race wins..." - Brands Hatch report via Autosport
"Carlin's Zak O'Sullivan says hitting his personal targets will be the key to success in British F4" - read the interview here.
"Zak O'Sullivan joins Carlin for maiden British F4 season"
"Zak O’Sullivan crowned 2019 Ginetta Junior Vice-Champion and youngest ever Rookie Cup winner"
“Zak O’Sullivan continues to improve and impress…and if this kind of form stays…he’ll certainly be a title contender”
Karting Magazine 2018
“O'Sullivan snatched his maiden Kartmasters GP Title in dramtic style... ”
Motorsport News 2016