Blunham beat Biggleswade by seven wickets in their East Beds Shield rematch on Tuesday night after the original game was tied.
Biggleswade scored 112, and Blunham 116-3 made to set up a semi-final against Cople on a date to be confirmed.
Waresley were due to play Eaton Socon in the other semi last night (Thursday).
The tied quarter-final has caused a delay to the tournament schedule.
As a result the date of the final, originally lined up for July 7, is still to be confirmed.