Kelvin Marte  Kelvin Marte (born November 24, 1987) is a Dominican professional baseball pitcher who is a free agent. He made his Major League Baseball (MLB) debut with the Pittsburgh Pirates in 2016. Marte played in the San Francisco Giants organization from 2007 to 2015. He signed with the Pittsburgh Pirates before the 2016 season. Marte was called up to the majors for the first time on August 30, 2016. In December 2016, Marte signed a minor league contract with the Miami Marlins. He elected free agency on November 6, 2017. On February 5, 2018, Marte signed with the Saraperos de Saltillo of the Mexican Baseball League. He became a free agent following the season, but later re-signed with the team on April 13, 2019. Marte was released by the Saraperos on July 26, 2019.