The William Hill Greyhound Derby gets underway this week, with 39 first round heats taking place over Thursday, Friday and Saturday.Racing Post Greyhound TV's Jonathan Kay joins Mark Walton to look ahead to the competition, with Jonathan offering his selections in the Outright market.They also discuss some of the specials on the William Hill website and discuss the prospects of the competition's leading fancies.Enjoy.http://serve.williamhill.com/promoRedirect?member=audiobooUK&campaign=DEFAULT&channel=will_horse&zone=1474273946&lp=0