Parker (7-7) picked up the win Wednesday, allowing one run on five hits and a walk over seven innings in a 6-1 victory over the Rockies. He struck out six.

Parker (6-7) took the loss against the Phillies on Thursday, allowing nine runs on 10 hits and two walks over three innings. He struck out six.

Parker (5-5) took the loss Monday against the Cardinals, allowing two runs (one earned) on six hits and one walk over seven innings. He struck out six.

Parker did not factor into the decision in a loss to the Rockies on Saturday, allowing four runs on six hits and two walks over six innings while striking out eight.

Parker (5-3) picked up the win Sunday against Miami, allowing one earned run on six hits and zero walks while striking out four over six innings.

Parker's next projected start will be pushed back to Monday at Atlanta, Bobby Blanco of MASNSports.com reports. Parker was initially scheduled to face the Mariners on Sunday.

Parker (2-2) took the loss in the second game of Tuesday's doubleheader against the White Sox, giving up three runs on five hits and two walks over five-plus innings. He struck out three.

Parker will start the second game of Tuesday's doubleheader against the White Sox.

Parker is slated to start Sunday's game against the Astros at Nationals Park, Mark Zuckerman of MASNSports.com reports.

The Nationals recalled Parker from Triple-A Rochester on Monday, Andrew Golden of The Washington Post reports.