Chapman was initially held out of the A's lineup on Monday, with the team citing the development of a left knee infection. The 24-year-old was prescribed oral antibiotics at the time.
The third baseman made his MLB debut on June 15 against the Yankees. He was rated Oakland's No. 4 prospect, the No. 88 prospect in baseball and the game's No. 6 third-base prospect entering the season by MLBPipeline.