Caller One secures Golden Shaheen double Caller One repeated last year`s Dubai Golden Shaheen victory by just getting the better of American compatriot Echo Eddie in a driving finish at Nad Al Sheba today.Gary Stevens, who was completing a double on the night, had his mount in the firing line from the off in the six furlong sprint.Favourite Xtra Heat, who finished third, was the first to crack in the final 120 metres as Patrick Valenzuela galvanised Echo Eddie to challenge the leader.But Caller One demonstrated the qualities that have made him one of America`s top sprinters to win in a photo finish.Winning trainer James Chapman saddles Western Pride in the Dubai World Cup later on Saturday.The first four home in the Golden Shaheen were all trained in the U.S.