Beginning in 2019, the minimum class index for Top Sportsman and Top Dragster will move from 6.00 to 6.10. The maximum dial in will not change. The revision will bring the class ET breaks in better alignment with chassis requirements and the current rules package for vehicles running in the Top Sportsman/Top Dragster category.
- Qualifying runs quicker than 6.100 (3.700 eighth-mile) will be placed on the bottom of the qualifying list in reverse order following the slowest posted qualifying time.
- Runs between 6.000 and 6.100 during eliminations will be treated as a "break-out" run. Double-breakout rules and "first or worst" rules apply.
- Runs quicker than 6.000 (3.660 eighth-mile) in qualifying or eliminations will be an automatic disqualification from the event and the driver will receive 0 points from the event, which will be charged as 1 of the driver's 8 eligible divisional or 5 eligible national scored events for the current season.
TS: 6.10 to 7.99 (1/4 Mile), 3.70 to 5.29(1/8th Mile)
TD: 6.10 to 7.70 (1/4 Mile), 3.70 to 4.99 (1/8th Mile)