4 for Gigginstown at Wexford There was a first and last race double at Wexford for Joseph O'Brien when Imperial Way took the Jim Whitty Memorial (C & G) (Pro/Am) INH Flat Race. It was a fourth winner on the day at Bettyville for owners Gigginstown House Stud. O'Brien won a earlier maiden hurdle with Early Doors (J P McManus/Mark Walsh), and here he employed Patrick Mullins for the spin on Imperial Way. He got the better of market rival Mad Carew by five lengths.   High School Days (Henry de Bromhead/Chris Meehan), A Genie In Abottle (Noel Meade/Sean Flanagan) and Dinaria Des Obeaux (Gordon Elliott/Jack Kennedy) were the other Gigginstown victors. Mullins said on Imperial Way: "He did it well and he was entitled to do it on his good runs up the country at Leopardstown and Fairyhouse. "I rode him when Tom Mullins had him, so it was nice to get back on him. Thanks to Joseph and Gigginstown for letting me ride him. "I think he is a horse who will be better over a jump, and the further he goes the better I'd say. I think they'll have a lot of fun with him."  (DM & EM)