Jarrod Parker requested $1.7 million and was offered $850,000 from the Athletics when arbitration figures were exchanged.
Athletics activated RHP Jarrod Parker from the 60-day disabled list.
Jarrod Parker (elbow) played catch on Monday.
Jarrod Parker (elbow) is hoping to be cleared to begin a throwing program in 2-3 weeks.
Athletics placed RHP Jarrod Parker on the 60-day disabled list with a torn ulnar collateral ligament in his right elbow.
Jarrod Parker's Tommy John surgery on his right elbow has been moved up a day and will now be performed on Monday.
Jarrod Parker will undergo Tommy John surgery on his right elbow on March 25.
Chris Cotillo of MLB Daily Dish reports that the Athletics don't believe Jarrod Parker has any structural damage in his arm.
Jarrod Parker is expected to open the season on the disabled list due to tightness in his right forearm.
Jarrod Parker struggled in Monday's start, allowing four runs in 4 2/3 innings against the Dodgers.
Jarrod Parker issued one run over 3 1/3 innings of work against the Brewers on Wednesday.
Jarrod Parker was annihilated in his Cactus League debut against the Giants on Friday, surrendering six runs on five hits in only 1 1/3 innings of work.
Susan Slusser of the San Francisco Chronicle reports that Jarrod Parker will pitch on Friday, and remains on track to get the nod on Opening Day.
Jarrod Parker said Saturday that he added five pounds over the winter and worked to improve his overall conditioning to avoid fatigue late in the season.