[1][2] The competition is named in honour of the late Peter 'Ace' McDonald, a long-time Cowra Magpies, Group 10, Western Division and Country Rugby League administrator, and is played in four grades, these being First-Grade, Reserve-Grade, Under 18s and Ladies League Tag.

[3] The competition was founded in 2022 after a series of strategic meetings with Group 10 and 11 clubs conducted by the NSWRL.

However, the competition will feature all four grades from 2023, as clubs wanted a full consistent matchday.

Initially, the First Grade premiers progressed to the two week state NSWRL Presidents Cup finals against the Northern (Newcastle), Southern (Illawarra) and Ron Massey Cup (Sydney) conferences to crown the state semi-professional club champions, however this was scrapped after the 2023 season.

It features teams from the Peter McDonald Premiership, and their affiliates (in the case of Orange and Panorama), as well as representative sides from other Western Division competitions such as the Castlereagh League and Woodbridge Cup.