THE 11-year-old Castlefield Vegas (ISH) has been sold to Mexican rider Sergio Nieto del Rio. Ridden by Bertram Allen since January, after he purchased a share in the horse from Martin Egan and Ger O’Neill, the gelding has a remarkable record at 1.50m level. During week six of the Winter Equestrian Festival in Wellington, Florida, they won both the $37,000 Adequan WEF Challenge and the three-star $137,000 IDA Development Grand Prix.