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Mark Shaffer - Results By Track/Series
Track
Series
Race/Speedweek
Year
Races: 40
Wins: 0
Top 5: 0
Top 10: 0
Payout: $0 (Note, could be incomplete)
Totals
| Races | Avg Finish | Wins | Top 5 | Top 10 | Money |
| 1989 | 3 | 45.7 | | | | |
| 1988 | 2 | 38.5 | | | | |
| 1987 | 3 | 53.7 | | | | |
| 1986 | 4 | 42.0 | | | | |
| 1985 | 3 | 53.3 | | | | |
| 1984 | 5 | 39.2 | | | | |
| 1983 | 5 | 26.4 | | | | |
| 1982 | 2 | 48.0 | | | | |
| 1981 | 6 | 32.5 | | | | |
| 1980 | 6 | 27.2 | | | | |
| 1979 | 1 | 88.0 | | | | |
Results
Count: 40
| Race Date | Class | Series | Track | Race | Finish | Time Trial | Feature Start |
| Saturday, August 11, 1979 | Wingless | WoO | Knoxville,IA | Knoxville Nationals | 88 | | |
| Saturday, April 19, 1980 | Wingless | WoO | Knoxville,IA | Season Opener | 28 | 18 | |
| Sunday, April 20, 1980 | Wing | WoO | Knoxville,IA | | 24 | | |
| Friday, May 30, 1980 | Wing | WoO | Knoxville,IA | | 28 | 22 | |
| Saturday, May 31, 1980 | Wing | WoO | Knoxville,IA | | 20 | 18 | 16 |
| Sunday, August 17, 1980 | Wingless | WoO | Knoxville,IA | Knoxville Nationals | 43 | | |
| Saturday, September 20, 1980 | Wing | WoO | Knoxville,IA | | 20 | 23 | 18 |
| Saturday, April 18, 1981 | Wingless | WoO | Knoxville,IA | Season Opener | 34 | 18 | |
| Friday, May 22, 1981 | Wing | WoO | Knoxville,IA | | 22 | 23 | |
| Saturday, May 23, 1981 | Wingless | WoO | Knoxville,IA | | 16 | 20 | 17 |
| Wednesday, July 22, 1981 | Wingless | WoO | Knoxville,IA | | 15 | 23 | 15 |
| Saturday, August 15, 1981 | Wingless | WoO | Knoxville,IA | Knoxville Nationals | 81 | | |
| Saturday, September 12, 1981 | Wing | WoO | Knoxville,IA | | 27 | 19 | |
| Saturday, April 17, 1982 | Wing | WoO | Knoxville,IA | Season Opener | 37 | 26 | |
| Sunday, August 15, 1982 | Wing | WoO | Knoxville,IA | Knoxville Nationals | 59 | | |
| Saturday, April 16, 1983 | Wing | WoO | Knoxville,IA | Season Opener | 19 | 33 | 20 |
| Wednesday, July 27, 1983 | Wing | WoO | Knoxville,IA | | 35 | 26 | |
| Saturday, August 13, 1983 | Wing | WoO | Knoxville,IA | Knoxville Nationals | 45 | | |
| Friday, October 14, 1983 | Wing | WoO | Knoxville,IA | | 12 | 19 | 9 |
| Sunday, October 16, 1983 | Wing | WoO | Knoxville,IA | | 21 | | 18 |
| Saturday, April 28, 1984 | Wing | WoO | Knoxville,IA | Season Opener | 29 | 24 | |
| Wednesday, July 25, 1984 | Wing | WoO | Knoxville,IA | | 16 | 22 | 19 |
| Saturday, August 11, 1984 | Wing | WoO | Knoxville,IA | Knoxville Nationals | 88 | | |
| Friday, October 12, 1984 | Wing | WoO | Knoxville,IA | | 36 | 36 | |
| Saturday, October 13, 1984 | Wing | WoO | Knoxville,IA | | 27 | 21 | |
| Saturday, April 27, 1985 | Wing | WoO | Knoxville,IA | Season Opener | 32 | 30 | |
| Sunday, April 28, 1985 | Wing | WoO | Knoxville,IA | | 44 | 40 | |
| Saturday, August 17, 1985 | Wing | WoO | Knoxville,IA | Knoxville Nationals | 84 | | |
| Friday, April 25, 1986 | Wing | WoO | Knoxville,IA | Season Opener | 27 | 34 | |
| Saturday, April 26, 1986 | Wing | WoO | Knoxville,IA | | 13 | 29 | 23 |
| Wednesday, June 25, 1986 | Wing | WoO | Knoxville,IA | | 38 | 18 | |
| Saturday, August 16, 1986 | Wing | WoO | Knoxville,IA | Knoxville Nationals | 90 | | |
| Friday, April 24, 1987 | Wing | WoO | Knoxville,IA | Season Opener | 42 | 34 | |
| Wednesday, July 22, 1987 | Wing | WoO | Knoxville,IA | | 36 | 36 | |
| Saturday, August 15, 1987 | Wing | WoO | Knoxville,IA | Knoxville Nationals | 83 | | |
| Wednesday, June 22, 1988 | Wing | WoO | Knoxville,IA | | 38 | 36 | |
| Saturday, August 13, 1988 | Wing | WoO | Knoxville,IA | Knoxville Nationals | 39 | | |
| Friday, June 23, 1989 | Wing | WoO | Knoxville,IA | | 28 | 32 | |
| Saturday, June 24, 1989 | Wing | WoO | Knoxville,IA | | 45 | 36 | |
| Saturday, August 19, 1989 | Wing | WoO | Knoxville,IA | Knoxville Nationals | 64 | | |
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