You’re tapping into one of the most important frontiers in modern handicapping. Sectionals—fractional times within a race—let you see
how a horse ran, not just
how fast the final time was. Integrating them into speed figures turns raw times into something far more predictive.
Below is a clear, practical framework for doing it.
What Sectionals Actually Add
Speed figures (Beyer, Timeform, RPR, etc.) mostly measure
final performance.
Sectionals measure
energy distribution.
When you combine them, you can:
- Identify horses who ran inefficiently but still posted a strong figure
- Spot horses who were flattered by a slow early pace
- Adjust for pace bias and race shape
- Project improvement when a horse gets a more suitable setup
Core Methods for Incorporating Sectionals
1. Pace-Adjusted Speed Figures
You start with a standard speed figure, then adjust it based on how fast or slow the early fractions were relative to par.
Process:
- Establish par sectionals for the class/distance/track
- Compare the race’s actual sectionals to par
- Apply a pace adjustment (positive or negative) to the final figure
Example:
If the early pace was
–10 lengths slower than par, the final time is artificially fast.
You’d
subtract from the figure to correct for the easy setup.
If the early pace was
+10 lengths faster than par, the final time is suppressed.
You’d
add to the figure to reward the horse for surviving a hot pace.
2. Energy Distribution Metrics
These quantify how evenly a horse used its energy.
Common measures:
- % Early: proportion of total time spent in the early fractions
- Finishing Speed %: final sectional vs. race average
- Turn-of-Foot Index: acceleration between sectional points
You then integrate these into your figure by:
- Upgrading horses with strong late energy in fast-run races
- Downgrading horses who only finish fast off slow paces
- Flagging horses who ran “against the race shape”
3. Sectional-Based Variant Adjustments
Track variants usually adjust for surface speed across the day.
Sectionals let you refine this by identifying:
- Races where the surface changed mid-card
- Distances where the rail or wind affected only certain segments
- Biases that only show up in specific parts of the race
You can apply sectional-based variants to:
- Early pace
- Mid-race fractions
- Final furlong
This produces a more accurate final figure.
4. Composite Figures
Some handicappers build a
combined figure that blends:
- Final-time figure
- Early pace figure
- Late pace figure
- Efficiency score
A simple weighting model might look like:
- 40% final time
- 30% early pace
- 30% late pace
More advanced models use regression or machine learning to determine optimal weights.
5. Trip-Adjusted Figures Using Sectionals
Sectionals reveal hidden trips:
- Wide moves
- Mid-race surges
- Being checked or steadied
- Being forced to run inefficiently
You can quantify the cost of these moves (e.g., lengths lost per second) and adjust the figure accordingly.
Why This Works
Final time alone hides
how the horse achieved it.
Sectionals expose:
- Horses who ran better than the clock shows
- Horses who ran worse than the clock shows
- Horses who are likely to improve dramatically next time
This is where the real edge lies.
If you want, I can walk you through building a
step-by-step model for pace-adjusted speed figures or even help you design your own weighting system.