The giants of the West dominated possession and took control of the game until momentarily loss of concentration cost them a place in the finals to be held in Accra.
The defeat will be a massive blow to the teeming followers of the powerhouse who were looking forward to making a significant impact in the national finals.
Parading a host of big players including captain Sidney Larbie, GSTS failed to make their superiority count as they crashed out 24-23.
GSTS will however be presented with another opportunity to secure qualification when they participate in the X’mas on December 24 at the Aviation Social Centre.
They will line up against the likes of Akosombo International, Anlo Senior High, Sacred Heart Secondary Technical, Ghana Lebanon and Islamic School (GLISS), Holy Trinity, Wesley Grammar, St John’s Grammar, Labone Senior High, Armed Forces Secondary Technical as well as Chemu Senior.
Akosombo-based Akwamuman Senior High, Achimota School, King College from Kumasi and Sogakope Senior High are all in the reckoning to battle it out where the finalists will join the 16 boys’ teams in the grand-finale.
GSTS and St John’s are two major rivals in the Western Region with the giants stealing the march off their opponent over the past few years.
But St Johns had the last laugh as they coasted to the sweet victory and qualified to the finals in Accra.