Central/Stirling claimed their first win of the season thanks to a magnificent hundred from Nathan Khan.
Captaining the side for the day in the absence of Toby Baxter, Khan took it to every West bowler on his way to 103 and helping Central to a 135-run win.
After winning the toss and electing to bat, Central made a positive start with Roby McDonald finding the gaps in the field early.
He fell for 12 when sub-fielder Tyrell McKenzie latched onto one at square leg in the third over.
This brought Jeremy Edson to the crease and he also looked solid at the crease.
After elegantly straight-driving him for four, he edged one off Steven Hutchins into the waiting hands of Orry Kirkham, leaving the Tigers 2/46.
However, that would be West's last wicket for over 30 overs as Khan and Harrison came together in a terrific stand.
They made their way through to the drinks break with Harrison as the dominant batsman, but things changed after the interval as Khan stepped on the gas.
He won the race to reach 50 and carried on from there as Harrison took a back seat and played the supporting role.
The runs continued to flow as West struggled to find a relieving wicket as Harrison got to his 50 and Khan closed in on the hundred.
After putting on 128 runs, the partnership was finally broken on the 44th over when Josh Dunstan dismissed Harrison for a terrific 52.
Dean Miller took his place and started attacking immediately, hitting a four off his first ball but the main highlight came when Khan found a big enough gap to come back for two and bring up the ton.
He was finally caught at long on for 103 in the search for late runs, but the damage was done and Central finished their fifty overs five wickets down for 211.
West began the chase poorly with the losses of both openers, Stroyan and Schmiauke, early, leaving the Hawks 2/4 after the first six overs.
Roby McDonald started wonderfully with the new ball and was well backed up by Cameron Edson to keep West on the back foot.
Kale Irvine and Jake Beaumont hung around for a while but still struggled for runs with the tight bowling.
Edson struck a double-blow with the wickets of Irvine and Mitchell Foote in the same over to leave West reeling at 4/12.
They gained a bit of momentum when Josh Dunstan joined Beaumont at the crease in West's only substantial partnership for the day. It lasted 10 overs and was worth 43 runs but once it was ended with Beaumont caught behind for 18, West fell away quickly.
Dunstan was the highest run scorer with 31 but their run chase never really got going and Central were home comfortably.
Harrison finished with 3/16 to add to his 52 runs while the always-reliable Cameron Edson took 2/14 from his ten overs.
However, it was the Nathan Khan show as the stand-in skipper guided the Tigers home for their first win of the summer.
Quorn vs. South
Meanwhile over the bridge, Quorn responded from their loss to West with a 59-run win over the previously undefeated South.
With arguably their strongest line-up for the year so far, Quorn piled on 229 runs against the usually-restricting South attack before bowling the Bulldogs out for 170.
Quorn were lead with the bat by Matt Griffiths, Tom Finlay and Mark Francis who all contributed with solid scores before Liam Bury and the unlikely hero, Kade Baker, combined for six wickets.
Corey Cuffe proved difficult to dismiss in his 42-run innings and although Ben Trewartha (31), Craig Shirley (28) and Will Waterworth (21) contributed, it wasn't enough.
Round Four tightened the gaps in the ladder with Central and Quorn picking up their first wins of the season.
South and West remain on top with four points each while Central and Quorn moved up to three apiece