Euan Walker (Kilmarnock Barassie) finished tied 23rd after the strokeplay qualifying rounds with a three under par total of 139.
Walker had a one over par 73 over the Princes course but his superb second round of four under par 66 at Royal St Georges, which included five birdies and a single bogey, saw him safely through to the matchplay stages with a couple of shots to spare after the cut fell at one under par.
In Wednesday's first matchplay round, walker faces England's Jordan Sundborg (Shanklin & Sandown).
Ferguson, who is a member of Turnberry and has his family roots in Maybole, recorded three bogeys, one birdie and an eagle three at the fourteenth in a level par round of 70 over the Royal St Georges course and negotiated the Princes links in a superb five under par 67, which included two bogeys and seven birdies, to give him a qualifying total of 137.
In the first round proper of matchplay on Wednesday, Ferguson will face one of the preliminary round winners who qualified on the cut score of 141.