Joseph O'Brien to ride St Nic on Saturday Joseph O'Brien will take the ride aboard St Nicholas Abbey, in the eagerly anticipated Group 1, King George VI & Queen Elizabeth Stakes at Ascot on Saturday, for his father Aidan. This morning on Twitter, Annemarie O'Brien, tweeted "St Nicholas Abbey is our only runner in the King George at Ascot on Saturday and Joseph will be declared to ride him." As already reported in an earlier story on this website today, a field of five will line up for Saturday's showpiece with Workforce and Ryan Moore set to go off the favourite. O'Brien will be bidding to follow up on his sole Group 1 success which came earlier this season when he landed the Irish 2,000 Guineas aboard Roderic O’Connor. Paddy Power bet: 6/4 Workforce, 11/4 St Nicholas Abbey, Rewilding, 13/2 Nathaniel, 100/1 Debussy.