Peterson made his first grade debut for Western Suburbs against Balmain in Round 7 1926 at Pratten Park.
In 1930, Wests finished as minor premiers and reached the NSWRL grand final against St George.
A week later, Western Suburbs defeated St George 27-2 in the grand final replay winning their first premiership but Peterson cruelly missed out on selection in the match.
Ironically as what had happened 2 years earlier, Souths had finished as minor premiers and used their right to challenge for a rematch.
In the grand final replay, Peterson played at hooker as Souths defeated Wests 19-12 at the Sydney Sports Ground.