| 12/08/1936 | Round 7, Pick 14 - Philadelphia Sailors: 2B Hal CaldwellDrafted in the 1936 first-year player draft (Round 7, Pick 15, 111st overall pick) by the Chicago Chiefs, out of high school Hudson (Hudson; Hudson, MI). |
| 01/01/1937 | OSA scouting updated ratings (potential): Stuff: - (-); Movement: - (-); Control: - (-). |
| 01/01/1938 | OSA scouting updated ratings (potential): Stuff: - (-); Movement: - (-); Control: - (-). |
| 05/21/1938 | Injured (sore back),day-to-day for 1 day. |
| 08/22/1938 | Injured (finger blister),day-to-day for 1 day. |
| 01/01/1939 | OSA scouting updated ratings (potential): Stuff: - (-); Movement: - (-); Control: - (-). |
| 08/04/1939 | Injured (finger blister),day-to-day for one week. |
| 01/01/1940 | OSA scouting updated ratings (potential): Stuff: - (-); Movement: - (-); Control: - (-). |
| 01/01/1941 | OSA scouting updated ratings (potential): Stuff: - (-); Movement: - (-); Control: - (-). |
| 06/30/1941 | Injured (sore elbow),day-to-day for 4 days. |
| 01/01/1942 | OSA scouting updated ratings (potential): Stuff: - (-); Movement: - (-); Control: - (-). |
| 04/30/1942 | Injured (torn fingernail),day-to-day for 4 days. |
| 06/22/1942 | Pitches a 4-hit shutout against the Nashville Chieftains with 2 strikeouts and 2 BB allowed! |
| 06/27/1942 | Pitches a 5-hit shutout against the Chattanooga Reliables with 3 strikeouts and 0 BB allowed! |
| 01/01/1943 | OSA scouting updated ratings (potential): Stuff: - (-); Movement: - (-); Control: - (-). |
| 01/01/1944 | OSA scouting updated ratings (potential): Stuff: - (-); Movement: - (-); Control: - (-). |
| 01/01/1945 | OSA scouting updated ratings (potential): Stuff: - (-); Movement: - (-); Control: - (-). |
| 10/11/1945 | Released by the Chicago organization. |
| 10/12/1945 | Retired from professional baseball. |