Joseph O'Brien insists he will ride on the Flat last week . The 21-year-old rode hurdles for the first time at Limerick this season . O'Brien admits his time on the Flat is likely to be limited by weight issues .
Joseph O'Brien insists he will ride on the Flat this season . The 21-year-old rode hurdles for the first time at Limerick last week . O'Brien admits his time on the Flat is likely to be limited by weight issues .