Bill Mackey
William C. Gretsinger, Jr.
Birthplace: Dayton, Ohio
Born: December 15, 1927
Died: July 29, 1951
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| Year | Series | Starts | DNS/DNQ | Wins | 2nds | 3rds | 4ths | 5ths | Best Finish | Poles | Points | Standing |
| 1949 | AAA | 0 | 1 | 0 | 0 | 0 | 0 | 0 | NS | 0 | 0 |
NR |
| 1950 | AAA | 3 | 2 | 0 | 0 | 0 | 0 | 0 | 8 | 0 | 125 | 30 |
| 1951 | AAA | 3 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 300 | 20T | |
| Total | 6 | 3 | 0 | 0 | 0 | 1 | 0 | 0 | 425 |
| Track Type | Starts | DNS/DNQ | Wins | 2nds | 3rds | 4ths | 5ths | Best Finish | Poles |
| Dirt Oval | 3 | 3 | 0 | 0 | 0 | 0 | 0 | 8 | 0 |
| Paved Oval | 3 | 0 | 0 | 0 | 0 | 1 | 0 | 0 |
| Series | Starts | DNS/DNQ | Wins | 2nds | 3rds | 4ths | 5ths | Best Finish | Poles |
| AAA | 6 | 3 | 0 | 0 | 0 | 1 | 0 | 0 |
| Start # | Date | Track | Type | Series | Car # | Sponsor/Name | Chassis | Engine | Start | Finish | Laps | Status |
Points |
| -- | 8/20/1949 | Springfield 1 | DO | AAA | 28 | Dayton Coil Spring | X | Ralph Miller | -- | -- | -- | DNS, too slow | |
| -- | 9/9/1950 | Syracuse | DO | AAA | 58 | Scopa | Scopa | Offy | -- | -- | -- | DNS, too slow | |
| -- | 9/10/1950 | Detroit | DO | AAA | 58 | Scopa | Scopa | Offy | -- | -- | -- | DNS, too slow | |
| 1 | 11/12/1950 | Phoenix | DO | AAA | 52 | Idddings | Meyer | Offy | 5 | 8 | 99 | Flagged | 50 |
| 2 | 11/26/1950 | Bay Meadows | DO | AAA | 52 | Iddings | Meyer | Offy | 12 | 8 | X | Flagged | 75 |
| 3 | 12/10/1950 | Darlington | PO | AAA | 52 | Iddings | Meyer | Offy | 4 | 22 | 88 | Hit fence, turn 1 | |
| 4 | 5/30/1951 | Indianapolis | PO | AAA | 71 | Karl Hall | Stevens | Offy | 33 | 19 | 97 | Broken clutch shaft | |
| 5 | 6/10/1951 | Milwaukee 1 | DO | AAA | 33 | Iddings | Meyer | Offy | 16 | 13 | 55 | Spun out | |
| 6 | 7/4/1951 | Darlington | PO | AAA | 33 | Iddings | Meyer | Offy | 19 | 4 | 200 | Finished | 300 |