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Junior Rafael Alvarado (born May 20, 1986) is a jockey in the sport of Thoroughbred racing who rode his first winner on December 30, 2005, at La Rinconada Hippodrome near Caracas, Venezuela before moving to ride in the United States in 2007 where he got his first winner on February 17 at Gulfstream Park in Hallandale Beach, Florida.