Landmark Homes OBR are the defending champions but several players are expected to be away this weekend.
Bollywood Stars High School Old Boys defeated OBR in the Doleman Cup 40-over competition final before Christmas and, of the three teams in the A grade this season, look the most comfortable with the bat.
The third team, Horouta, have a bye tomorrow.
HSOB captain Carl Shaw said his side were looking forward to playing cricket again.
“I've never played this format so I'm looking forward to the change and excited to see how the different tactics and plans play out,” he said.
“I'll be leaning heavily on team-mates who have experience in the format.”
Shaw felt his side might also learn a few things from how their opponents go about their task.
“It's good to play against OBR first, too. They won last year, so obviously have a good knowledge of the rules.”