| 08/30/1945 | Brother of Pat Messner. |
| 06/19/1957 | Drafted in the 1957 first-year player draft out of high school (Christian Academy; Chicago, IL) by the Montreal Saints. (Round 17, Pick 10, 266th overall pick). |
| 06/19/1957 | Released by the Montreal organization. |
| 06/25/1957 | Signed a 1-year minor league contract with the New York Gothams organization. |
| 05/30/1959 | Injured (eye infection),out for 5 days. |
| 09/09/1962 | Wins the 1962 Championship with the Rock Island Steamboats! |
| 01/01/1963 | OSA scouting updated ratings: Stuff: 4; Movement: 2; Control: 2. |
| 01/01/1963 | OSA scouting updated ratings: Stuff: 4; Movement: 2; Control: 2. |
| 09/22/1963 | Wins the 1963 Championship with the Fresno Falcons! |
| 01/01/1964 | OSA scouting updated ratings: Stuff: 4; Movement: 2; Control: 1. |
| 02/24/1968 | Released by the New York organization. |
| 03/11/1968 | Signed a minor league contract ($900 bonus) with the Cincinnati Cannons organization. |
| 06/18/1968 | Released by the Cincinnati organization. |
| 07/01/1968 | Signed a minor league contract with the Detroit Dynamos organization. |
| 09/09/1968 | Retired from professional baseball. |