The was the situation Wagga Wagga found themselves in against Mitchell on Wednesday four overs into their innings as Hugh Thompson tore the side's top order apart at the Country Club Oval.

Thompson dismissed the entire top six in his eight overs across two spells - conceding just 25 runs, no less - before returning to rattle the stumps of number 11 Jack McCartan for wicket number seven. with only Jaxson Allen's 58 mounting any form of resistance for the Riverina side.

The quick's Kinross teammate Gus Cornish also jumped in on the action with two wickets as the side dismissed Wagga for 102, with only one catch taken for the innings - by Thompson off his own bowling.

Blake Kreuzberger backed up his second-day century with 42 off 37 to top-score in the chase, which came at the cost of only four wickets and took less than 25 overs.

Thompson wasn't the only bowler to clean up on Wednesday, with Sam Scott taking 5-6 from 8.2 overs, including five maidens as Mosman dismissed St John's India for 75 in the 40^th over, needing less than 20 to chase the target down.

Mosman only lost one wicket as Alex Segaert (39) and Will Nutt (22) accounted the bulk of the runs.

Dubbo managed to defend a small total of 150 as their bowlers fired, dismissing Blacktown for 130 in the 34^th over as Ted Murray took three wickets and Lachie Rummans and Angus Rose two apiece.

Hugh Sienkiewicz managed to tame the conditions with the bat for Dubbo in hitting an unbeaten 56 as the tail stuck around alongside him after coming in at 5-64, with Armaan Singh (3-23) accounting for three of those wickets.

Tushar Sharma tried to will his side over the line with 40 not out, but ran out of support.

Fin Young was the difference for Wakatipu High School at Jack Brabham Park in the side's 19-run win over Penrith.

Coming in at number three, Young hit 12 fours on his way to 78, accounting for more than half of his side's 160, with CJ Kemp's 23 the only other contribution of note as Penrith's Luke Parkinson (3-17), Kaelan Penny (2-47) and Bailey Bedford (2-10) set to work.

However, the Penrith batters couldn't back up the bowlers as only Jack Gale passed 20.

WHS skipper Will Cooper took 3-16 and Toby Hart 3-37 as Fletcher Marshall chimed in with two wickets to skittle the Sydney side for just 141.

Dylan Melvey hit 78 and Harry Gianoutsos 65 to set up South Eastern's total of 221, but half-centuries from Arinath Gobinath, Hugo Di Veroli and Yuvraj Thakur helped push the five-wicket win.

Meanwhile in the girls' competition, a Bethany Tate half-century helped guide her Parramatta side to a thrilling three-run win over Gordon on Wednesday.

Tate hit 53 off 65 at the top of the order before being run out, paving the way alongside Lucy Wilson (33) for a total of 161.

Gordon just ran out of time to chase it down, reaching 8-159 in their full allotment of overs despite 48 to Taara Kotibhaskar, while Zoe Twining and Wilson took three wickets each for their respective sides.

Maddison Spence did her best to life Western Blue to a win over Penrith after holding the side to 102, but despite her unbeaten 25 the home side could only manage 82 in reply, as Molly Jones struck three times with the ball.

Meanwhile, the result of a Manly-Warringah and Western Red thriller at Kinross Wolaroi School as the Sydney side clinched a one-run win despite a fighting Katie Letcher half century.