Parker was drafted out of Hereford High School in Texas, and apparently could have been the quarterback at Texas Tech if he had chosen to go that route, so it seems like he was an all-around gifted athlete in high school. He worked his way through every level of the Orioles minor league system over the past seven years, at times seeming like a sure-fire Major Leaguer following up with other stretches where it seemed like he would never make it to the show.
He has consistently been ranked as one of the Orioles highest prospects, owing at least in part to their shallow farm system, and was added to the 40-man roster prior to the 2016 season to protect him from the Rule 5 draft. Parker was also invited to the big league camp for the first time in 2016 so all the signs seemed to be pointing in the right direction for him. However, during the season, he battled some injuries and was also moved to the bullpen, where it seems like the team thinks his MLB future might be, so it took most of the season before he finally got the call to the O's. He made his MLB debut on Sunday August 21st against the Astros, and pitched two innings in relative mop up duty to help out the overtaxed Orioles bullpen. He gave up two hits, including a HR, and struck out two Astros batters.
I have a number of Parker's signed minor league cards from over the years, although he pitched in Aberdeen and Delmarva, two places that I didn't often get to during the years that I made it to the most minor league games. It feels nice to once again have been prepared for the debut of a new Oriole!
Parker has always seemed like a decent guy so I hope that he has finally found his way to the Orioles permanently. Good luck to him!