The Welsh-qualified back joins the club from the Canterbury and Crusaders pathway in New Zealand. A talented full-back who can also operate across the backfield, Isaac was selected for the New Zealand Schools side in 2023, starting at full-back against Australia U18, and was also part of the Westlake Boys High School team that won the World Schools Festival in Thailand later that year. He has continued his development within the Canterbury system, representing Canterbury B and being named in the Crusaders U20 squad for the 2025 Super Rugby U20 tournament. He was also involved in the Crusaders’ pre-season squad earlier this year. Isaac is Welsh-qualified through his mother, who is from Llanelli. He’s also a cousin of Wales international and Scarlets centre Joe Roberts.