Walliss made his first grade debut for Illawarra in round 17 of the 1993 NSWRL season against the
Gold Coast Seagulls. Walliss came off the interchange bench in a 26-0 victory at
WIN Stadium. In 1995, Walliss joined South Sydney. He played two seasons with Souths before switching to Western Suburbs ahead of the
1997 ARL season. Walliss played one match for Western Suburbs which was in round 1 of the 1997 season against the Gold Coast Chargers. ==References==