Top Australian racehorse Might and Power has been retired, aborting attempts to bring him back to a competitive level after a 22-month layoff. The 7-year-old gelded son of Zabeel tallied 15 wins, including seven group I races, from 33 starts, with eight placings. He earned more than AUS$5.2 million.Included among the top races for Might and Power were the 1997 Melbourne Cup and the 1998 Cox Plate. Previous to his '77 Melbourne Cup win, the gelding set a course record with a 7 1/2-length romp in the Caulfield Cup.Trained by Jack Denham for owner Nick Moraitis, Might and Power was sidelined for nearly two years due to injury. The dual Horse of the Year honoree finished last in both starts upon his return to competition following the layoff."We gave him the opportunity but, even though he looked better in his last run, we decided, in the horse's interests, it was better to retire him," Moraitis said, according to The Racing Post.The gelding will be sent to Denham's son Alan's property at Dooralong, near Wyong on the New South Wales Central Coast.