THE appropriately named Rock On Rio, impressive when winning a maiden at Tralee in late May, topped trade at the Tattersalls Ireland Ascot July Sale on Tuesday, selling to Andrew McNamara for £75,000 on behalf of owner Michael Carmody. The four-year-old son of Caption Rio was the star on a day when the company reported a 56% increase in aggregate to £1,303,200, a 48% rise in average and a 33% jump in the median.