Fox Lodge will be playing Premiership cricket next season.
Their place was retained in the top flight on Sunday evening after a dramatic 5-run play off win over Ballyspallen at Beechgrove.
Cup finalist Ballyspallen stay in the championship.
Fox Lodge 198-8 (35 overs; B Allen 88*, D Mehaffey 27; S McCloskey 2-32, Step Kennedy 2-36, M Averill 2-39)
Ballyspallen 193 (34.4 overs; D McCallum 78, C Averill 43, Ste Kennedy 37; J Milligan 3-23, A Walker 2-34, A Boyd 2-45)