Malone was traded from the Diamondbacks to the Pirates along with Liover Peguero and $250,000 in exchange for Starling Marte on Monday, Jon Heyman of MLB Network reports.
The 33rd overall pick in last year's draft, Malone has thrown just eight professional innings thus far in his career. He's touched 99 mph and has a pair of promising secondaries in his curveball and slider, as well as a usual changeup. He has mid-rotation upside but is still several years away from the big leagues.