| 03/22/1934 | Brother of Paul and Adrian Czerwinski. |
| 01/01/1950 | OSA scouting updated ratings (potential): Contact: - (-); Power: - (-); Eye: - (-). |
| 06/19/1952 | Drafted in the 1952 first-year player draft (Round 1, Pick 1, 1st overall pick) by the Chicago Chiefs, out of high school Carrick (Carrick; Pittsburgh, PA). |
| 03/05/1953 | Unsuccessfully completed training to generate more batspeed and homerun power at the Chicago Chiefs development complex. |
| 04/13/1953 | Named the #3 prospect in the FABL |
| 04/30/1953 | Injured (sprained finger),day-to-day for 1-2 weeks. |
| 03/09/1954 | Outstandingly completed training to generate gap power at the Chicago Chiefs development complex. |
| 04/13/1954 | Named the #2 prospect in the FABL |
| 04/11/1955 | Named the #84 prospect in the FABL |
| 07/03/1955 | Named the #79 prospect in the FABL |
| 07/03/1955 | Injured (back stiffness),day-to-day for 2 days. |
| 10/12/1956 | Was traded by the Chicago Chiefs to the Chicago Cougars, along with RP Norm McBride, RF Virgil McLaughlin, 2B Hack Williams, and SP Hank Walker, in exchange for LF Doc Zimmerman and $12,000. |
| 01/02/1962 | Drafted in the 1961 expansion draft from the Chicago Cougars by the Los Angeles Suns. (Round 1, Pick 3, 3rd overall pick). |
| 01/01/1963 | OSA scouting updated ratings: Contact: 2; Power: 3; Eye: 2. |
| 09/26/1963 | Injured (strained back),out for 2-3 weeks. |
| 01/01/1964 | OSA scouting updated ratings: Contact: 2; Power: 3; Eye: 1. |
| 03/30/1964 | Injured (strained back),day-to-day for one week. |
| 04/07/1964 | Injured (hip soreness),day-to-day for one week. |
| 02/18/1965 | Was traded by the Los Angeles Suns to the Minneapolis Millers, along with RP George Moses, in exchange for LF Ned Price, SP Roy Rice, and LF George Wampole. |
| 04/13/1965 | Injured (heat exhaustion),day-to-day for 2 days. |
| 10/24/1965 | Wins the 1965 FABL FA Diamond Defense Award at C. |
| 06/09/1966 | Injured (ruptured medial collateral ligament),out for 8 months. |
| 08/11/1967 | Injured (mild oblique strain),day-to-day for 3 days. |
| 10/21/1967 | Wins the 1967 FABL FA Diamond Defense Award at C. |
| 10/22/1968 | Wins the 1968 FABL FA Diamond Defense Award at C. |
| 01/21/1969 | Outstandingly completed training to improve his base-stealing technique at the Minneapolis Millers development complex. |
| 05/13/1969 | Injured (partially torn labrum),out for 6-7 weeks. |
| 05/07/1970 | Injured (bruised knee),day-to-day for 3 days. |
| 12/10/1971 | Designated for assignment and placed on waivers by the Minneapolis Millers. |
| 12/24/1971 | Released by the Minneapolis Millers. |
| 10/21/1972 | Retired from professional baseball. |