Cowell opened the Eastern Eyre A grade cricket season with a dominant home nine-wicket win against Darke Peak on Saturday.
The visitors were bundled out for 143 despite the best efforts of Jamie Pearson, with Cowell cruising to 1/150 in response.
Pearson took control after Darke Peak fell to 3/27 as he smashed 86 runs from only 100 balls, including 11 fours and two sixes.
He and Leslie Pearson, 15 runs, combined for a partnership of 84, but the Darke Peak tail struggled as they lost their last six wickets for 13 runs.
Jarrad Schiller bowled well to finish with 3/8 from seven overs, with two maidens, as Zane Wykamp, Judd Wykamp and Carl Jaeschke grabbed two scalps apiece.
Jaeschke finished the innings off by bowling Aaron Bammann for three, then carried the bat as Cowell eased to victory.
He partnered with Judd Wykamp (26) for an opening partnership of 66 before he was removed by Coby Dolling, then was joined by Zane Wykamp in adding a further 84 runs.
Jaeschke was not out on 68 and Wykamp made an unbeaten 38.
Meanwhile, reigning champions Cleve beat Buckleboo by two wickets in a close match at Buckleboo.
The home side reached 9/169 before Cleve got over the line with 8/173.
Matt Vandeleur led the way for Buckleboo with 46 and had support from Josh Vandeleur (31 runs) and Brad Woolford (20).
Zane Crettenden bowled well to take 3/37, with Elliott Claxton and Cameron Taheny each picking up two wickets.
Cleve had starts at the top of the order, with 23 from Angus Turner and 20 from Jed Burton, in addition to an innings-best of 37 runs from Curtis Newlyn.
The wicket of Burton took the score to 2/83, but Cleve progressed into triple figures before hitting a snag as they lost 3/9.
They continued to lose wickets, but Crettenden's 29 and 12 not out from Jake Stutley got Cleve over the line.
Andrew Vandeleur took 3/25.
Elsewhere, Lock's openers helped them to 66-run win against Kelly and Kimba at Lock.
The hosts reached 8/176 before bowling well to dismiss Kelly and Kimba for 110.
Timothy Reynolds and Tim Boehm got the season going with a 79-run stand before Reynolds was stumped for 46.
Boehm was patient in picking the gaps and eventually made 55 before being the sixth player sent back to the pavilion.
Craig Wheare added important late runs with a swashbuckling 38 from 26 balls, with four fours and a six.
The best of the Kelly and Kimba bowling attack was James Cant with 3/39.
Cant was then removed for a duck as the run chase got off to the worst possible start.
Ben Clements (15) and Jack Chinnery's innings-best 26 put on 39 runs for the second wicket, but the visitors saw both players dismissed amid a middle-order collapse in which they lost 5/11.
Kurt Wright added 16 runs, but it was not enough for Kelly and Kimba.
Justin Beard ripped through the lower order to take 5/30, while Fletcher Kammermann added 3/23.
The other match saw Rudall defeat Port Neill via a forfeit.