Mac's Imp was a bay horse with a white sock on his left hind leg bred in Kentucky by Brereton C Jones & Rodney P Carothers.
[4] His dam Flaming Reason showed more modest racing ability, winning four minor events in a four-year track career.
[5] She was descended from Flaring Top (foaled 1947) an influential American broodmare who was the ancestor of many major winners including Nijinsky and The Minstrel.
Five days at his success at Newbury, Mac's Imp was moved up in class and started the 2/1 favourite against twelve opponents for the Group 3 Coventry Stakes at Royal Ascot.
[9] In the following month at Newmarket, Mac's Imp started favourite for the July Stakes but after leading for most of the way he was overtaken approaching the final furlong and beaten into second place by Mujtahid.
Starting the even money favourite, Mac's Imp prevailed by a neck from Distinctly North with a gap of three lengths back to the other eleven runners.