Official NHA Assessment
Race 3: ALL TO COME MAIDEN PLATE (F & M) (For Maiden (F&M) R10 000 Win Bonus ROA Members)
Line Horse
Silver Slippers
Reference for assessment
Exact Matches
0 / 18
Calculated = Official
Close Matches
3 / 18
Within 2 points
Significant Diffs
14 / 18
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Red Rules 4 60.0 1 0.00 2.5 54 67 60 +6 2 St Patrick's Day 4 60.0 2 0.25 2.5 50 67 67 +17 3 Silver Slippers 3 59.0 3 0.75 5.0 64 64 64 +0 4 Libran Lana 3 59.0 4 2.00 5.0 59 63 63 +4 5 Lauretta Mia 3 59.0 5 3.25 5.0 65 62 62 -3 5 Colorama 6 59.0 5 3.25 0.0 63 72 72 +9 7 Nova Stella 4 60.0 7 5.25 2.5 44 67 67 +23 8 Dame Colleen 3 59.0 8 6.50 5.0 51 60 60 +9 9 Different Drum 3 55.0 9 9.25 5.0 70 52 60 -10 10 Iqembulabesifazane 3 59.0 10 14.75 5.0 66 60 60 -6 11 Willow Moon 3 59.0 11 15.25 5.0 - 60 60 +60 12 Meadow Beauty 3 59.0 12 17.50 5.0 58 60 60 +2 13 Fame And Claim 3 59.0 13 22.50 5.0 - 60 60 +60 14 Fly By 3 59.0 14 25.25 5.0 61 60 60 -1 15 Roy's Spirit 5 60.0 15 39.50 0.0 20 72 72 +52 99 Wichita 5 60.0 99 0.00 0.0 - 72 72 +0 99 Fort Snow 4 60.0 99 0.00 2.5 - 67 67 +0 99 Wildest Dreams 3 59.0 99 0.00 5.0 - 60 60 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Red Rules | 54 | 46 | 60 | -14 | 2.5 | - | |
| 2 | St Patrick's Day | 50 | 42 | 67 | -25 | 2.5 | - | |
| 3 | Silver Slippers Line | 64 | 63 | 64 | -1 | 5.0 | ||
| 4 | Libran Lana | 59 | 51 | 63 | -12 | 5.0 | - | |
| 5 | Lauretta Mia | 65 | 63 | 62 | +1 | 5.0 | - | |
| 5 | Colorama | 63 | 54 | 72 | -18 | 0.0 | - | |
| 7 | Nova Stella | 44 | 48 | 67 | -19 | 2.5 | - | |
| 8 | Dame Colleen | 51 | 46 | 60 | -14 | 5.0 | - | |
| 9 | Different Drum | 70 | 47 | 60 | -13 | 5.0 | - | |
| 10 | Iqembulabesifazane | 66 | 65 | 60 | +5 | 5.0 | - | |
| 11 | Willow Moon | - | 28 | 60 | -32 | 5.0 | - | |
| 12 | Meadow Beauty | 58 | 53 | 60 | -7 | 5.0 | - | |
| 13 | Fame And Claim | - | 21 | 60 | -39 | 5.0 | - | |
| 14 | Fly By | 61 | 58 | 60 | -2 | 5.0 | - | |
| 15 | Roy's Spirit | 20 | 10 | 72 | -62 | 0.0 | - | |
| 99 | Wichita | - | 48 | 72 | -24 | 0.0 | - | |
| 99 | Fort Snow | - | 42 | 67 | -25 | 2.5 | - | |
| 99 | Wildest Dreams | - | 87 | 60 | +27 | 5.0 | - |
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