Alberto Callaspo, a Venezuelan infielder, began his Major League Baseball career with the Arizona Diamondbacks. Signed as an amateur free agent in 2001, he made his MLB debut on August 6, 2006. Callaspo's time with the Diamondbacks was brief, as he was traded to the Kansas City Royals in December 2006.

During his tenure with the Royals, Callaspo developed a reputation for his contact hitting and ability to play multiple infield positions. In 2009, he enjoyed a breakout season, hitting .300 with 11 home runs and 73 RBIs. His performance at the plate and versatility in the field made him a valuable asset for the Royals.

In July 2010, Callaspo was traded to the Los Angeles Angels. With the Angels, he continued to demonstrate his skills as a reliable infielder. He played primarily at third base and contributed to the team's infield stability. Callaspo's batting average remained consistent, and he was known for his ability to put the ball in play and avoid strikeouts.

Callaspo's tenure with the Angels lasted until July 2013, when he was traded to the Oakland Athletics. With the Athletics, he continued to be a steady presence in the infield. His time in Oakland was marked by his role in the team's playoff push, as the Athletics reached the postseason in 2013 and 2014.

In December 2014, Callaspo signed a one-year contract with the Atlanta Braves. His stint with the Braves was short-lived, as he was traded to the Los Angeles Dodgers in May 2015. Callaspo's time with the Dodgers marked the final chapter of his MLB career. He was released by the Dodgers in August 2015.

Throughout his career, Callaspo was known for his contact hitting, ability to play multiple positions, and steady presence on the field.