Ballymaguigan fields Gaelic football teams at U-8, U-10, U-12, U-14, U-16, Minor, Reserve and Senior levels.

Gaelic games had been organised on the western shores of Lough Neagh for over 50 years before St Trea's GFC was formed.

This effectively split the parish in two, making it very difficult for the Ballymaguigan-based players to travel to the pitch.

The clubs first ever full team game was away at Castledawson in early June 1944, their first home fixture was against Greenlough on 17 September 1944.

That year the team won 3 matches in Division 1, against Desertmartin, Castledawson and Loup but lost against Newbridge in the McGlinchey Cup.

The game was cancelled due to fighting and Ballinderry refused to play the replay because they accused a Ballymaguigan player of being ineligible.

[5] Ballymmaguigan also won the All-County Junior Championship on 22 September 1951 by defeating Ervey in Magherafelt, the scoreline was 2-06 1-03.

Apart from hiring a bulldozer to level the ground, this work was carried out completely by voluntary labour.

That year they defeated Slaughtneil, Newbridge and Ballinascreen in league games that season and they won the Coalisland Tournament beating Omagh by one point in the final.

[8] In 1958 the Derry Championship changed to an open draw system so this meant that the old South Derry Championship wasn't played, the competition was replaced with the Sean Larkin Cup, Ballymaguigan won this cup in 1958, they beat Bellaghy in an early round, then Kilrea and they beat Ballinascreen in the final.

[11] Three playing members of St Trea's, John Bateson (aged 19), James Sheridan (20) and Martin Lee (18), all members of the South Derry Brigade of the Provisional Irish Republican Army died when the bomb they were carrying exploded prematurely in Magherafelt on 18 December 1971.