Belfast proved too strong for Ballymena, beating them by 7 wickets in their T20 clash at Eaton Park.
The home side were skittled for just 74, in difficult conditions.
Anthony Frazer made 23, while there were three wickets apiece for Ferhan Saeed and Aneeb Shah.
The chase was a routine one as Nicolaas Serdyn cleared the ropes three times in an unbeaten 26 to seal victory with three overs left.