Alfredo Aceves

Aceves was signed by the Toronto Blue Jays as an amateur free agent in 2001. He made ten starts in the Dominican Summer League that year. However, Aceves felt isolated, and when the Blue Jays assigned him to stay in the DSL for 2002, Aceves stayed in Mexico, and his contract was purchased by the Yucatán Leones of the Mexican League. Aceves pitched for Yucatán and Sultanes de Monterrey for the next six seasons.

After going a combined 8-6 with a 2.62 earned run average (ERA) on the three Yankee farm teams, Aceves was called up to the Yankees on August 28, 2008. On August 31, Aceves made his Yankee and major league debut, pitching two scoreless innings in relief.

Aceves married his wife Arley in November 2008, after proposing to her during a Trenton Thunder game during the 2008 season. His father, Alfredo Aceves Sr., was a first baseman in the Mexican League. His older brother, Jonathan Aceves, was a minor league catcher in the Chicago White Sox organization, for the Naranjeros de Hermosillo in the Mexican Pacific League and for the Saraperos de Saltillo of the Mexican League. Aceves wears #91, a number worn by Dennis Rodman, whom Aceves admires. Aceves' son Apollo was born on August 1, 2013.

Aceves made ten relief appearances in 2010 before succumbing to a strained lower back that ended his season. He suffered a broken collarbone in an off-season bicycle accident. He was non-tendered after the season.

Aceves was signed to a major league deal by the Boston Red Sox on February 8, 2011. On April 21, he was optioned to the Triple-A Pawtucket Red Sox to make room for Matt Albers on the roster. On May 6 he was called back up, and on May 16 he won his first game with the Red Sox. Between then and September 1, Aceves has a 9–1 record out of the bullpen for Boston.

After five games in 2013, which included three starts, Aceves was optioned to Triple-A Pawtucket on April 25 two days after giving away eight runs in 3.1 innings against the Oakland Athletics. Aceves was recalled on May 24 for a one-off start against the Philadelphia Phillies. Despite the win, he was optioned to Triple-A Pawtucket on May 28. He was recalled again on June 12, and returned to Pawtucket the next day. He was recalled on July 7 when Andrew Miller suffered a year-ending foot injury. He was optioned 3 days later. On July 14, Aceves was outrighted off the 40-man roster after clearing waivers. He elected free agency on October 4.

Aceves signed a minor league deal with the Baltimore Orioles in January 2014. Aceves took a short break from 2014 Spring training to return to Mexico to obtain a work visa. After learning that he would not make the Orioles roster near the end of Spring training, Aceves elected to opt out of his contract, making him a free agent.

Aceves signed a minor league deal with the Yankees on March 28, 2014. He received a promotion to the major leagues on May 3, and was designated for assignment on June 4. On July 3, he was suspended for 50 games for failing a drug test for recreational drugs. He was released on August 27.

Aceves signed a minor league deal with the San Francisco Giants on March 7, 2015. The Giants assigned him to the Sultanes de Monterrey of the Mexican League for the 2015 season. He was suspended for the remainder of the season in June for his confrontation with an umpire. He resigned on April 5, 2015. He was released on May 16, 2017.

On May 19, 2017, Aceves signed with the Saraperos de Saltillo of the Mexican Baseball League. He was released on July 11, 2017.