O'Brien the fav for Royal Ascot jockeys crown Joseph O’Brien is the current 2-1 favourite with bookmakers Paddy Power to be the top jockey at Royal Ascot this week. He was as short as 11-10 but has drifted in recent days with continued support coming for last year’s leading rider, Ryan Moore, who is now just 9-4. Moore was as big as 3-1, while Richard Hughes has also been well-supported, going from 7-1 into a current price of 4-1. Jamie Spencer is next in the betting at 8-1 while Johnny Murtagh and Kieran Fallon are both 33-1. Paddy Power bet; 2-1 Joseph O’Brien, 9-4 Ryan Moore, 4-1 Richard Hughes, 8-1 Jamie Spencer, 12-1 William Buick, Paul Hanagan, 16-1 Silvestre De Sousa, 20-1 James Doyle, 33-1 Tom Queally, Joe Fanning, Jim Crowley, Johnny Murtagh, Kieran Fallon, 50-1 Frankie Dettori.