Photo: The Quarterback (Street Boss (USA)-Soorena by Encosta de Lago) The Quarterback, who provided his sire Street Boss (USA) with his first Australian Gr.1 winner with his success in the $1.25m Newmarket Handicap down the straight 1200m at Flemington, hails from a pretty illustrious family. He is yet another star in the Dark Jewel firmament,...