Miguel Rojas has been with the Miami Marlins since the 2015 season, and as such is the longest tenured player on the parent club. Of course, that’s not counting the minor leagues. Jose Urena has been with the organization since 2010, and is the longest-tenured player overall.
Rojas is a six-foot, 195 lb. shortstop from Los Teques, VZ born on February 24th, 1989. Originally he was a part of the Cincinnati Reds organization, making his professional debut in 2008 with the Billings Mustangs in the Rookie-level Pioneer League. He appeared at most levels of the Reds system over the next five seasons, joining the Los Angeles Dodgers for 2013.