A fine 74 from Malcolm Swift took Ainsdale to 186 all out against Sutton, with the home side's John Dotters
(4-42) and Phil Frost (3-16) bowling well.
Slow left-armer John Dotters
took 5-30 and Steven Cline bagged 4-21 to dismiss the home side for just 102 in 37.
Four wickets from John Dotters
(4-72) helped complete the win as Caldy were dismissed for 200.
(Rainford), Liam Grey (Northern), Tom Jones (Orrell Red Triangle), Tyler McGladdery (Rainhill), Dan Robson (Lytham) and Jack Vale (Formby) have all been picked to take on the Australians at Todmorden on Monday, July 6 and Tuesday, July 7 (11am start).
Steve McGinity (69) top scored as St Mary's reached 183 all out, Sutton's 15-year-old spinner John Dotters
took six for 47, as his side won by 35 runs.
Both Stephen Lucas (106) and Liam Grey (134) hit centuries with John Dotters
finishing unbeaten on 81.