- David Robertson (RP) Robertson is projected to miss the entire 2020 season due to Tommy John surgery. 11/11 · Out · Elbow
- Tyler Anderson (SP) Anderson had surgery to repair cartilage in his left knee. It is unknown if he will be ready for the season opener versus the Dodgers. 11/25 · Questionable · Knee
- Reyes Moronta (RP) Moronta is likely to be sidelined until at least sometime in August while he recovers from right shoulder surgery. 11/11 · Out · Shoulder
- Yoenis Céspedes (LF) Cespedes had surgery to repair multiple fractures in his right ankle and another surgery on both heels. He is in danger of missing the entire 2020 season. 11/11 · Out · Ankle
- Drew Smith (RP) Smith is working his way back from Tommy John surgery on his right elbow and is expected to be out of action until at least the middle of July. 11/11 · Out · Elbow
- Jameson Taillon (SP) Taillon is expected to miss the entire 2020 season while recuperating from Tommy John surgery and flexor tendon repair surgery. 11/11 · Out · Elbow
- Jason Martin (CF) Martin is on the mend from surgery to fix a torn labrum in his left shoulder, leaving his status for opening day versus the Rays in question. 11/11 · Questionable · Shoulder
- Corey Knebel (RP) Knebel is healing from Tommy John surgery and is expected to be on the shelf until sometime in July. 11/11 · Out · Elbow
- Bobby Wahl (RP) Wahl is recuperating from a torn ACL and is unlikely to play before the middle of July. 11/25 · Out · Knee
- Silvino Bracho (RP) Bracho is recovering from Tommy John surgery on his right elbow and is likely to be away from the field until at least the middle of July. 11/11 · Out · Elbow
- Jordan Hicks (RP) Hicks is on the mend after having Tommy John surgery on his right elbow and is projected to be out of commission until at least the end of July. 11/11 · Out · Elbow
- Brendan Rodgers (2B) Rodgers is recuperating from surgery to fix a torn labrum in his right shoulder, but he is likely to be available against the Padres in the season opener is up in the air. 11/17 · Probable · Shoulder
- Nick Senzel (CF) Senzel is working his way back from surgery to correct a torn labrum in his shoulder, and it is undetermined if he will be ready for opening day against the Cardinals. 11/11 · Questionable · Shoulder
