AJ Ramos, a right-handed pitcher known for his tenacity on the mound, began his Major League Baseball career with the Miami Marlins. Drafted in the 21st round of the 2009 MLB Draft out of Texas Tech University, Ramos worked his way through the minor leagues, showcasing his skills as a relief pitcher. By September 2012, he made his MLB debut with the Marlins, quickly establishing himself as a reliable option in the bullpen.

Throughout his tenure with the Marlins, Ramos became known for his ability to close out games. In 2015, he took over as the team's closer, a role in which he excelled. That season, he recorded 32 saves, demonstrating his capability to handle high-pressure situations. His performance earned him a spot in the 2016 MLB All-Star Game, a testament to his effectiveness and consistency on the field.

Ramos continued to serve as the Marlins' closer until 2017, when he was traded to the New York Mets. The Mets sought to bolster their bullpen, and Ramos was seen as a valuable addition. Despite some challenges with injuries, he managed to contribute to the Mets' relief efforts during his time with the team.

In 2018, Ramos faced a significant setback when he underwent shoulder surgery, which sidelined him for the remainder of the season. This injury marked a challenging period in his career, as he worked diligently to recover and return to the mound. After his release from the Mets, Ramos spent time as a free agent, focusing on rehabilitation and training.

Ramos made a comeback in 2020, signing a minor league deal with the Los Angeles Dodgers. Although he did not make an appearance for the Dodgers in the regular season, his perseverance paid off when he signed with the Colorado Rockies later that year. Ramos pitched in a handful of games for the Rockies, marking his return to MLB action after a lengthy recovery.

In 2021, Ramos continued his journey by signing a minor league contract with the Los Angeles Angels. While he did not make it back to the major league roster, his efforts to remain in the game highlighted his determination to overcome adversity and continue pursuing his baseball career.