Blair Riordan scorched around the Fairhall course with a bogey free six under par round of 66 to win the Whitehaven Wines of Marlborough Pro-am. Riordan was unable to play in the Pro-am event at his home club of Nelson yesterday due to work requirements in the pro shop and was rewarded today with a fine win, Second place was shared by Dongwoo Kang and the well performed Lachie McDonald with scores of 67.