 In what was widely considered to be an unusually even Derby field, Rangipo brought strong form into the race with wins in the Great Northern Guineas, Waikato Guineas and Avondale Guineas.Being a son of speedy Australian stallion Stryker, the main question mark hanging over his credentials was his stamina for the 2400-metre test.But after sitting midfield behind a solid early pace, Rangipo moved into contention in the home straight and held on strongly to beat the fast-finishing What's The Story by a short head.