Share this: The Washington Nationals reportedly have made a significant move to upgrade their bullpen. The Nationals have acquired closer Mark Melancon from the Pittsburgh Pirates in a multi-player trade, FOX Sports’ Ken Rosenthal reported Saturday, citing sources. Washington will send relief pitcher Felipe Rivero and left-handed pitching prospect Taylor Hearn to Pittsburgh in return, according to MLB Network insider Jon Heyman. Melancon has developed into one of Major League Baseball’s top closers over the past few seasons. He saved an MLB-best 51 games in 53 opportunities for the Pirates last season and entered Saturday with 30 saves in 2016 to go along with a 1.51 ERA and a 0.96 WHIP. That’s good news for the Nationals, who have gotten inconsistent results from current