HALLANDALE BEACH – Saffie Joseph Jr produced an upset in the feature Crown Jewel Starter Stakes at Gulfstream Park on Saturday when 10-1 shot Twelve Volt Man won the U.S. $125 000 claiming event, to lead a hat-trick of added-money victories for the young Barbadian trainer. Joseph, 34, dominated the 11-race card at the south Florida oval, also registering successes in the U.S. $75 000 Crown Express Starter Stakes in …