Pirates shortstop Konnor Griffin will begin a rehab assignment in Double-A Altoona.

Pirates Manager Don Kelly told reporters before Tuesday’s game that Griffin will play with the Curve on Wednesday.

Griffin was placed on the 10-day injured list on May 31 after suffering a forearm strain.

The Pirates have been taking their time bringing back the 20-year-old rookie to make sure he is 100 percent before returning to the lineup.

Kelly said there isn’t an exact timeline for Griffin in Altoona and will take it “day-by-day.”

Kelly also updated the media on pitcher Jared Jones and said he is doing well after being hit in the elbow during Sunday’s start in Colorado.

He confirmed X-rays were negative for a fracture and that they are talking it day-by-day with him as well before his scheduled next start.