1998 Slugger Labbe NASCAR Winston Cup statistics
| Race # | Track | Driver | Start | Finish | Car # | Sponsor | Engine | Owner | Qualifying Speed | Laps | X Led | Laps Led | Status | Money | Points |
| 5 | Darlington | Kenny Irwin, Jr. | 5 | 39 | 28 | Texaco/Havoline | Ford | Yates | 168.140 | 270 | 0 | 0 | running | 30600 | 46 |
| 6 | Bristol | Kenny Irwin, Jr. | 27 | 43 | 28 | Texaco/Havoline | Ford | Yates | 122.443 | 88 | 0 | 0 | accident | 32077 | 34 |
| 7 | Texas | Kenny Irwin, Jr. | 4 | 39 | 28 | Texaco/Havoline | Ford | Yates | 184.622 | 80 | 0 | 0 | accident | 52675 | 46 |
| 8 | Martinsville | Kenny Irwin, Jr. | 35 | 19 | 28 | Texaco/Havoline | Ford | Yates | 91.492 | 498 | 0 | 0 | running | 36500 | 106 |
| 9 | Talladega | Kenny Irwin, Jr. | 25 | 40 | 28 | Texaco/Havoline | Ford | Yates | 191.577 | 128 | 0 | 0 | engine | 37250 | 43 |
| 10 | Fontana | Kenny Irwin, Jr. | 18 | 16 | 28 | Texaco/Havoline | Ford | Yates | 178.545 | 249 | 0 | 0 | running | 50425 | 115 |
| 12 | Dover | Kenny Irwin, Jr. | 9 | 33 | 28 | Texaco/Havoline | Ford | Yates | 153.695 | 391 | 0 | 0 | running | 32795 | 64 |
| 13 | Richmond | Kenny Irwin, Jr. | 11 | 9 | 28 | Texaco/Havoline | Ford | Yates | 124.052 | 400 | 0 | 0 | running | 41850 | 138 |
| 14 | Michigan | Kenny Irwin, Jr. | 14 | 13 | 28 | Texaco/Havoline | Ford | Yates | 180.203 | 199 | 0 | 0 | running | 39150 | 124 |
| 15 | Pocono | Kenny Irwin, Jr. | 36 | 11 | 28 | Texaco/Havoline | Ford | Yates | 164.687 | 200 | 0 | 0 | running | 33175 | 130 |
| 16 | Sonoma | Kenny Irwin, Jr. | 12 | 9 | 28 | Texaco/Havoline | Ford | Yates | 97.663 | 112 | 0 | 0 | running | 47365 | 138 |
| 17 | Loudon | Kenny Irwin, Jr. | 25 | 33 | 28 | Texaco/Havoline | Ford | Yates | 124.687 | 286 | 0 | 0 | running | 44950 | 64 |
| 18 | Pocono | Kenny Irwin, Jr. | 14 | 22 | 28 | Texaco/Havoline | Ford | Yates | 166.883 | 199 | 0 | 0 | running | 41165 | 97 |
| 19 | Indianapolis | Kenny Irwin, Jr. | 4 | 38 | 28 | Texaco/Havoline | Ford | Yates | 178.260 | 116 | 0 | 0 | accident | 98805 | 49 |
| 20 | Watkins Glen | Kenny Irwin, Jr. | 18 | 37 | 28 | Texaco/Havoline | Ford | Yates | 119.019 | 88 | 0 | 0 | running | 32710 | 52 |
| 21 | Michigan | Kenny Irwin, Jr. | 18 | 16 | 28 | Texaco/Havoline | Ford | Yates | 181.424 | 198 | 0 | 0 | running | 38190 | 115 |
| 22 | Bristol | Kenny Irwin, Jr. | 34 | 15 | 28 | Texaco/Havoline | Ford | Yates | 121.366 | 499 | 0 | 0 | running | 40260 | 118 |
| 23 | Loudon | Kenny Irwin, Jr. | 11 | 11 | 28 | Texaco/Havoline | Ford | Yates | 127.491 | 300 | 0 | 0 | running | 51350 | 130 |
| 24 | Darlington | Kenny Irwin, Jr. | 37 | 41 | 28 | Texaco/Havoline | Ford | Yates | provisional | 298 | 0 | 0 | oil pump | 34510 | 40 |
| 25 | Richmond | Kenny Irwin, Jr. | 36 | 10 | 28 | Texaco/Havoline | Ford | Yates | 122.555 | 400 | 1 | 2 | running | 47880 | 139 |
| 26 | Dover | Kenny Irwin, Jr. | 12 | 40 | 28 | Texaco/Havoline | Ford | Yates | 154.832 | 168 | 0 | 0 | engine | 31355 | 43 |
| 27 | Martinsville | Kenny Irwin, Jr. | 39 | 27 | 28 | Texaco/Havoline | Ford | Yates | provisional | 487 | 0 | 0 | running | 32200 | 82 |
| 28 | Charlotte | Kenny Irwin, Jr. | 10 | 20 | 28 | Texaco/Havoline | Ford | Yates | 180.505 | 326 | 0 | 0 | running | 35050 | 103 |
| 29 | Talladega | Kenny Irwin, Jr. | 7 | 43 | 28 | Texaco/Havoline | Ford | Yates | 194.102 | 30 | 0 | 0 | valve | 40550 | 34 |
| 30 | Daytona | Kenny Irwin, Jr. | 11 | 32 | 28 | Texaco/Havoline | Ford | Yates | 191.196 | 140 | 1 | 15 | accident | 40395 | 72 |
| 31 | Phoenix | Kenny Irwin, Jr. | 2 | 40 | 28 | Texaco/Havoline | Ford | Yates | 131.205 | 247 | 0 | 0 | running | 30390 | 43 |
| 32 | Rockingham | Kenny Irwin, Jr. | 33 | 33 | 28 | Texaco/Havoline | Ford | Yates | 153.793 | 387 | 0 | 0 | running | 29650 | 64 |
| 33 | Atlanta | Kenny Irwin, Jr. | 1 | 16 | 28 | Texaco/Havoline | Ford | Yates | 193.461 | 221 | 1 | 1 | running | 59125 | 120 |
