Wyatt played club rugby in Wales for Newport RFC and Llanelli RFC before moving to Irish province Munster and French clubs Bourgoin and Aix-en-Provence. His international debut came four days before his 25th birthday in the 6 June 1998 49–11 winning game against Zimbabwe at Harare. He was selected for the Wales squad in the 1999 and 2003 Rugby World Cups and played his last game in the 2 November 2003 53–37 loss to New Zealand during World Cup match in Sydney.