Penzance beat Redruth by 131 runs in the eagerly anticipated top-two clash in the Bond Timber Trophy League 1 West group on Saturday.
The home side set the tone for the match with a useful 267-7 from their innings before bowling out their opponents for 136 in the 32nd over.
The teams were level on points before the game but Penzance now lead the group by 14 points, with Penzance now well placed to seal a semi-final spot as early as next weekend.
A fine opening knock from Christian Purchase (73) saw the hosts brush off the early loss of fellow opener Kameron Collins (2) to quickly reach 96-2.
Jack Paull also weighed in with 73 and did much of it alongside Thomas Wells (100) as the pair enjoyed a 153-run stand for the third wicket to reach 249-3.
The home side lost four further wickets but could only add another 18 runs before the end of the innings.
Redruth's reply started slowly as Toby Whiteford (11) departed early on before James Harris registered what would be a top score of 28.
Craig Williams added 19 before a middle-order collapse saw the next four wickets fall for just 27 runs.
It looked like a tall order at 94-7, and although Craig Johnson (18) and Ellis Whiteford (26) steadied the ship, they could not prevent their side's dismissal after 31.3 overs.
Helston batsman Ciaran Johnson with Camborne wicketkeeper Liam Weeks. Picture by Colin Higgs
Helston kept their hopes of reaching the semi-finals alive thanks to a tense two-wicket victory at home to bottom side Camborne.
The visitors elected to bat and scored 151-8 from their 40 overs, with Helston crossing the winning line with just five balls to spare.
The Pink Caps are fourth and 12 points behind second-placed Redruth, who occupy the second and final semi-final spot.
Liam Weeks got Camborne off to a handy start with 37 off 51 balls before he was dismissed for lbw off Bradley Bury's ball.
Simon Hosking added 11 before Chris Gibson weighed in with 23.
Sam Pooley (17) and Alfie MacDonald (12) added double-figure hauls to get the visitors to 122-5 before they were dealt a double blow in the loss of Martin Jenkin (4) and Matt Hewitt (4) in quick succession as the away side managed 151.
Bury and Guy Leathley took three wickets apiece for the hosts.
Karl Leathley began Helston's reply with 23 after they suffered the early loss of Dan Jenkin for a duck after three balls.
A useful upper order contribution saw Mark Jenkin score 30, Ciaran Johnson add 12 and Ross Leathley top-score with 39 as Helston coasted towards their target.
Guy Leathley (11), Will Jenkin (3) and Steve Jenkin (6) fell as Helston reached 149-8 with 11 balls left to get the final four runs, with the hosts doing so with five to spare.
Helston batsman Karl Leathley. Picture by Colin Higgs
Falmouth's hopes of reaching the semi-finals are hanging by a thread after they lost by nine wickets at home to St Just.
The home side opted to bat first and reached 120-9 from their 40 overs, with St Just losing just one wicket on their way to meeting that target.
Truro remain rooted to the bottom of the East group table after they lost by five wickets at Wadebridge.
Robert Harrison (52no) and Charlie Kent (55) helped Truro towards 180-6, but a 55 from James Turpin saw the home side secure victory with 14 balls to spare.
Werrington retain top spot in the East group after they won by 84 runs at Grampound Road.
The group leaders recorded 151-9 before bowling their hosts out for 67 in the 27th over.
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