Tiennan Costley is 24 years old (Jun 14, 2000), 192 cm tall and plays for Japan XV.

Tiennan Costley statistics are available during live games and after every game played.

Tiennan Costley statistics may be available on Sofascore for some of the games.

Tiennan Costley previous game for Japan XV was Yokohama Canon Eagles - Kobelco Kobe Steelers in League One, Division 1 and the game ended with the result 29 - 47.

Tiennan Costley next game is Kobelco Kobe Steelers - Shizuoka Blue Revs in League One, Division 1 on May 10, 2025, 8:00:00 AM UTC.