Kelvin Marté Aquino
- Bats Right, Throws Left
- Height 5' 9", Weight 170 lb.
- Debut September 3, 2016
- Final Game September 4, 2016
- Born November 24, 1987 in Santo Domingo, Distrito Nacional D.R.
Pitcher Kelvin Marte began his profesional career in 2007. He was signed by the San Francisco Giants prior to the campaign.
With the DSL Giants that year, he was 5-1 with a 1.62 ERA in 28 relief appearances, striking out 91 batters and allowing only 36 hits in 61 innings. He had a 2.53 ERA in 42 2/3 innings the next year. In his first year as a full-time starter, 2011, he went 12-6 with a 3.47 ERA in 25 starts for the San Jose Giants to earn a spot on the California League Mid-Season All-Star team. He made the Eastern League Mid-Season All-Star squad after going 10-6 with a 2.63 ERA in 26 games (19 starts) for the Richmond Flying Squirrels in 2015.
He became a free agent after the 2015 season and signed with the Pittsburgh Pirates for 2016. He spent the season in AAA with the Indianapolis Indians, where he went 4-3, 3.67 in 34 games, including 4 starts, and notching 2 saves. He missed a couple of weeks in August with a sprained ankle. He was called up to Pittsburgh when rosters expanded and made his major league debut on September 3rd, pitching a third of an inning in relied against the Milwaukee Brewers, giving up a hit and a walk but also striking out a batter.