A 2 - 1 home win over Skelmorlie by Moorpark earned them a home tie in the quarter finals against Loudoun, who defeated Royal Troon 3 - 0 in their third round tie at Loudoun.
Irvine Ravenspark will entertain Largs in the quarter finals, following the latter's 3 - 0 home win over Prestwick St Nicholas in round three.
3-0 home wins by Caprington and Kilbirnie Place, over Crosshouse and Portmann respectively, set up a quarter final clash between the two clubs over the Caprington course.
West Kilbride will visit Rowallan Castle in the last eight following Rowallan Castle's home win by 2 - 1 over Troon Portland in their third round clash.
The quarter final ties are all due to be completed by the 24th of July.