There was some anticipation surrounding the first contest of the Washington Nationals' three-game set against the Chicago White Sox on Friday. Not only was this an opportunity for the Nationals to get back on track following a tough showing against the Atlanta Braves where they lost three out of four , but star minor league pitcher Riley Cornelio was also set to make his MLB debut . Unfortunately, things didn't go well for Cornelio. Called up to The Show in what was expected to be a piggyback role behind Miles Mikolas, he eventually took the mound in the bottom of the seventh inning in what was a one-run game. Cornelio was credited with the loss after giving up three runs (two earned). And per an announcement from the team, he was sent back to Triple-A Rochester. Riley Cornelio Struggled in His MLB Debut Washington Nationals pitcher Riley Cornelio | Patrick Gorski-Imagn Images Things did not start well for the 25-year-old right-hander. He walked the first two batters he faced.…