| 09/26/1921 | Grandson of Franz Gruber. |
| 01/01/1939 | OSA scouting updated ratings (potential): Contact: - (-); Power: - (-); Eye: - (-). |
| 01/01/1940 | OSA scouting updated ratings (potential): Contact: - (-); Power: - (-); Eye: - (-). |
| 06/24/1940 | Drafted in the 1940 first-year player draft out of high school (Fairfield; Fairfield, OH) by the Cincinnati Cannons. (Round 18, Pick 3, 275th overall pick). |
| 07/01/1940 | Released by the Cincinnati organization. |
| 07/06/1940 | Signed a 1-year minor league contract with the Austin Violets organization. |
| 09/24/1940 | Wins the 1940 Championship with the Austin Violets! |
| 09/25/1940 | Released by the Austin Violets. |
| 10/15/1940 | Signed a minor league contract with the Washington Eagles organization. |
| 01/01/1941 | OSA scouting updated ratings (potential): Contact: - (-); Power: - (-); Eye: - (-). |
| 01/01/1942 | OSA scouting updated ratings (potential): Contact: - (-); Power: - (-); Eye: - (-). |
| 01/01/1943 | OSA scouting updated ratings (potential): Contact: - (-); Power: - (-); Eye: - (-). |
| 01/01/1944 | OSA scouting updated ratings (potential): Contact: - (-); Power: - (-); Eye: - (-). |
| 01/01/1945 | OSA scouting updated ratings (potential): Contact: - (-); Power: - (-); Eye: - (-). |
| 12/24/1945 | Released by the Washington Eagles. |
| 01/01/1946 | OSA scouting updated ratings (potential): Contact: - (-); Power: - (-); Eye: - (-). |
| 10/13/1946 | Retired from professional baseball. |