Cabrera began his professional career in 2006, playing in the Colorado Rockies organization for the Casper Rockies. In 54 games, he hit .254 with 18 stolen bases. In 2007, he played for the Tri-City Dust Devils and Modesto Nuts, hitting .300 with 12 stolen bases in 150 at bats for the former and .267 in 15 at-bats for the latter.

While with the Asheville Tourists in 2008, in 121 games he hit .284 with 73 stolen bases—more than any other minor leaguer.

He was selected by the Padres from the Rockies minor league system in the Rule 5 draft on December 11, 2008.

Cabrera stole 9 bases in spring training 2009 for the Padres, and made the opening day roster as a backup infielder. As a Rule 5 draftee, the Padres were required to keep Cabrera on the 25-man roster throughout the 2009 season. He got his first hit in the major leagues on April 8, a double off of Cory Wade of the Los Angeles Dodgers in the seventh inning at Petco Park.

Cabrera had a solid rookie year debut despite losing two months to a hand injury, batting .255 with 25 steals and 59 runs scored in 103 games with the Padres, but he also led all NL shortstops with 23 errors. On August 7, Cabrera hit a walk-off grand-slam off the Mets closer Francisco Rodríguez in the bottom of the 9th, capping a Padres win 6 – 2. Cabrera helped defeat the Arizona Diamondbacks on September 16 (F/10, 6-5) with a game-winning, walk-off RBI that scored another fast rookie, Luis Durango. In November 2009, Cabrera was named Nicaragua's Professional Sports Athlete of the Year.

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Wikipedia