[2] On 20 April 1908, the world's first rugby league international between the England and Wales national sides took place on the Mid Rhondda Ground.

Although the team performed well on the pitch, and hosted international competition from the touring Australia side, the venture was unprofitable.

[4] Association football was traditionally more popular in north Wales, but the cup final between local Rhondda team Ton Pentre F.C.

[4] Mid-Rhondda RLFC folded at the end on the 1908–09 season, and plans were put into action to form an association team.

Early attempts to form a football club were placed on hold when industrial unrest spread through the Rhondda during 1910 and 1911.

The coal mining area of the valleys experienced several strikes centred on the Glamorgan Colliery in Llwynypia, neighbouring Tonypandy.

Mid Rhondda made a steady if unspectacular start to their professional career, finishing 8th out of 13 teams in their first season.

With more funds available the committee of the Mid Rhondda Club made a decision to push the first team for promotion to the First Division, emulating Cardiff City.

[7] He joined Mid Rhondda as secretary manager and immediately signed as captain former Aston Villa player, Joe Bache.

[8] Seed played "non-stop football" from the time he joined Mid Rhondda, and his lungs appeared to recover.

By the end of his first season Seed was signed by Tottenham Hotspur for £1,000, and enjoyed a long career with both Spurs and Sheffield Wednesday as well as making five appearances for England.

Another notable player on Mid Rhondda's books at this time was future Wales international, Dai Collier.

A highlight of the season was when Mid Rhondda played local rivals Ton Pentre in a preliminary round of the FA cup.

These encounters included wins over Nottingham Forest (3–1), Derby County (2–0) and Portsmouth (1–0) in 1919 and a draw against Tottenham Hotspur and a narrow loss to Aston Villa (1–2) in 1920.

[11] The club continued until March 1928 when, with debts of £1,400, Mid Rhondda was forced to close when the banks called in its overdraft.