Cornelsen's match data reveals a player built around defensive workrate, averaging over eleven tackles per game across ten international appearances — a figure underlined by a single-game peak of nineteen. He contributes consistently with ball in hand without dominating that phase, offering reliable metres and a high carry count that points to a workhorse role at the set-piece and beyond. His minute tallies and tackle numbers together suggest a lock trusted to stay on the field and absorb pressure across full contests.
Jack Cornelsen is a professional rugby union lock registered with the Japan, the South Africa-based franchise. He forms part of the matchday squad and is tasked with winning lineout ball and adding grunt in the second row.
As a lock, Jack features for the Japan across the United Rugby Championship, the Currie Cup and European club competition, with home fixtures played at South Africa in South Africa.
Follow Jack Cornelsen's match appearances, fixtures, results and the latest Japan news on Octafield — South Africa's home of rugby.