THERMAL, CA (March 2, 2013) – Fifty-three horse-and-rider combinations took the field, but it was the reigning World Cup winners who ruled the day Friday, when Rich Fellers and Flexible rode to victory in the $25,000 SmartPak Grand Prix, presented by Zoetis.   The rider from Wilsonville, Oregon and the chestnut stallion owned by Harry and Mollie Chapman, laid down a pair of sizzling rounds, although they were chased to the finish by Lane Clarke of Laguna Niguel, California and Horsemanship Unlimited’s Kiss the Sky, who finished second. Germany’s Meredith Michaels-Beerbaum and Windward Farm’s Unbelievable 5 placed third