The semifinalists have been found in the Rotorua/Taupo senior cricket reserve grade.
The last round-robin matches were played at the weekend, with undefeated sides Eastern Pirates and Taupo Old Boys finishing first and second respectively on the ladder.
Eastern Pirates (Rotorua) will now play Central reserves at Smallbone Park on Saturday, in the first semifinal, while Old Boys will host Bay of Plenty Indian Sports reserves (Rotorua) in Taupo.
The pre-Christmas, 40-over competition is the first of three competitions held during the reserve grade season, and is followed by the T20 and after-Christmas competitions.
Taupo Wanderers won the pre-Christmas competition last year but have since pulled out of the reserve grade after defaulting a few games.