Official NHA Assessment
Race 5: RUFFIAN STAKES (Listed) (For 2 yof R100 000 Win BSA Bonus Series)
Line Horse
None identified
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
8 / 8
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Mrs Geriatrix 2 60.0 1 0.00 3.0 - - - +0 2 Ripple Effect 2 60.0 2 0.75 3.0 - - - +0 3 Callmewhenuneedme 4 57.0 3 2.75 5.0 - - - +0 4 Miss Hannigan 4 60.0 4 3.00 5.0 - - - +0 5 Virginia Beach 2 60.0 5 7.00 3.0 - - - +0 6 Courageous 4 57.0 6 8.50 5.0 - - - +0 7 Givers Grace 2 60.0 7 10.50 3.0 - - - +0 8 Drumskitt 2 57.0 8 15.00 3.0 - - - +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Mrs Geriatrix | - | 112 | - | +112 | 3.0 | - | |
| 2 | Ripple Effect | - | 102 | - | +102 | 3.0 | - | |
| 3 | Callmewhenuneedme | - | 97 | - | +97 | 5.0 | - | |
| 4 | Miss Hannigan | - | 100 | - | +100 | 5.0 | - | |
| 5 | Virginia Beach | - | 82 | - | +82 | 3.0 | - | |
| 6 | Courageous | - | 62 | - | +62 | 5.0 | - | |
| 7 | Givers Grace | - | 61 | - | +61 | 3.0 | - | |
| 8 | Drumskitt | - | 72 | - | +72 | 3.0 | - |
Assessment Methodology
Calculation Steps:
- Identify Line Horse - consistent performer used as reference
- Calculate WFA Allowance based on age, distance, and month
- Apply Drag Adjustment for beaten margin
- Calculate Actual Weight Performance:
Weight - Drag - WFA - Compare to Line Horse to determine race rating
- Apply special rules (maiden caps, layoff allowance)
Key Formulas:
- Drag Effect: Varies by distance (see Benchmarks page)
- 1 length ≈ 1kg at 1 mile (1600m)
- WFA Scale: Based on Admiral Rous's 1855 table
- Rating Points: 1kg = 2 rating points