Last weekend Red Star hammered their Wairarapa neighbours United CC by 127 runs, scoring the first 300-plus score of the competition on the back of top innings from Stefan Hook (84), Jake Jonas (77) and Robbie Anderson (51).
They then unveiled their secret weapon – former All Black Zac Guildford – who took 4-36 as United were bowled out for 174.
Jonas and James Church took three wickets each to complete the shutout.
Levin Old Boys were similarly impressive in their 134-run win over Kāpiti Old Boys, taking a 2-1 edge in the rivals' Coastal derby games this year, after Levin won the T20 final while Kāpiti claimed the two-day semifinal.
In their 50-over clash, Levin fought their way to 235-9 on the back of an anchor innings from Dion Sanson (79) and crucial runs in the middle order from Ryan Taylor (51 not out).
The bowlers then ran through Kāpiti for just 101 in the 29th over, with the standout Taylor taking 4-19 while Jesse Parker picked up a pair of wickets.
After being bowled out for just 74 in their loss to Marist, United will need some of their big guns back on deck to take down Levin, while Marist are well aware that early victories in this seven-round competition are crucial to making and then staying in the Top 4.
Play starts at midday on Saturday.
Draw for February 5 Coastal Challenge Cup 50-over
Property Brokers United vs Levin Old Boys
Wanganui Vet Services Marist vs Burger King Red Star
Weraroa CC vs Kapiti Old Boys
United CC vs Paraparaumu Medical Centre CC
Premier 2 Twenty20
The Premier 2 Twenty20 competition has reached the final round for the races to make the Top 2 in each pool and secure a spot in the semifinals.
In Pool 1, Renegades take their bye with an undefeated record of four wins, guaranteed to finish top qualifier, while Matt Burke Engineering Marton Saracens will look to join them as they host the Wanganui United 3rds at Centennial Park.
If United pull off the upset, that could leave the door ajar for Wicket Warriors Whanganui, who take on Kaitoke CC.
In Pool 2, outcomes are less clear, as Tech Old Boys take on the Hunterville Hackers and Treadwell Gordon United 2nd XI meet Wanganui Old Boys.
Games start at 10.30am.
Draw for February 5 P2 Twenty20
Pool 1
Matt Burke Engineering Marton Saracens vs Wanganui United 3rds
Wicket Warriors Whanganui vs Kaitoke Cricket Club
Bye: Wanganui Renegades
Pool 2
Treadwell Gordon United 2nd XI vs Wanganui Old Boys
Tech Old Boys vs Hunterville Hackers
Bye: Marist Bs