Arriving consistently from the bench, Costley contributes a balanced blend of ball-carrying and defensive work across his six international appearances. His tackle numbers stand out as a defining trait, averaging over four per outing with a peak of eight in a single match, underlining the defensive urgency he brings when introduced. His carrying is purposeful rather than prolific, gaining meaningful metres on a limited number of touches each time he takes the field.
Tiennan Costley is a professional rugby union flanker registered with the Japan, the South Africa-based franchise. He forms part of the matchday squad and is tasked with hunting turnovers and carrying as a loose forward.
As a flanker, Tiennan 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 Tiennan Costley's match appearances, fixtures, results and the latest Japan news on Octafield — South Africa's home of rugby.