[1] He was one of Australia's first national representative players appearing in the inaugural professional series against New Zealand in 1907 and making the 1908–09 Kangaroo tour of Great Britain.
[2] At the time concerns were starting to be raised over rugby football and cricket administrations' treatment of their players, Moir was a frequent visitor to Australian international cricketer Victor Trumper's sporting goods store at Market Street, Sydney.
[3] Moir and Trumper, along with Alec Burdon, J J Giltinan and Henry Hoyle attended one such meeting in 1907 to form a new governing body for rugby football in New South Wales and organise a team to host Albert Baskiville's similarly rebellious touring New Zealand rugby team.
The following year, the 1908 NSWRFL season, the first of the New South Wales Rugby Football League, commenced and Moir played for Glebe RLFC.
[7][8] Peter Moir was awarded Life Membership of the New South Wales Rugby League in 1914.