Official NHA Assessment
Race 8: RACEHORSE OWNERS ASSOCIATION MR 66 HANDICAP (Open)
Line Horse
Clap Of Thunder
Reference for assessment
Exact Matches
0 / 14
Calculated = Official
Close Matches
6 / 14
Within 2 points
Significant Diffs
5 / 14
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 My Best Shot 3 60.0 1 0.00 1.5 88 64 88 +0 2 Arturo 2 58.0 2 2.50 0.0 66 65 65 -1 3 Clap Of Thunder 3 60.5 3 3.25 1.5 67 67 67 +0 4 Charlie Malone 5 60.0 4 3.50 0.0 66 68 68 +2 5 Wind Sock 3 59.5 5 5.00 1.5 65 63 63 -2 6 Destiny's Angel 3 61.0 6 5.05 1.5 68 66 66 -2 7 Absolu Noir 8 52.0 7 6.30 0.0 47 51 51 +4 8 Gunsmoke 3 61.5 8 8.05 1.5 69 67 67 -2 9 Mister Whistle 4 52.5 9 8.55 0.5 53 51 51 -2 10 Valyrian Sword 2 50.5 10 10.30 0.0 51 48 48 -3 11 My Ami Beach 6 58.0 11 11.30 0.0 70 63 63 -7 12 Admiral's Ransom 3 52.5 12 11.80 1.5 51 49 49 -2 13 Swiss Walt 4 60.5 13 12.30 0.5 71 67 67 -4 14 Princess Azariah 2 56.0 14 33.55 0.0 62 59 59 -3 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | My Best Shot | 88 | 116 | 88 | +28 | 1.5 | - | |
| 2 | Arturo | 66 | 76 | 65 | +11 | 0.0 | - | |
| 3 | Clap Of Thunder Line | 67 | 66 | 67 | -1 | 1.5 | ||
| 4 | Charlie Malone | 66 | 71 | 68 | +3 | 0.0 | - | |
| 5 | Wind Sock | 65 | 68 | 63 | +5 | 1.5 | - | |
| 6 | Destiny's Angel | 68 | 92 | 66 | +26 | 1.5 | - | |
| 7 | Absolu Noir | 47 | 50 | 51 | -1 | 0.0 | - | |
| 8 | Gunsmoke | 69 | 68 | 67 | +1 | 1.5 | - | |
| 9 | Mister Whistle | 53 | 52 | 51 | +1 | 0.5 | - | |
| 10 | Valyrian Sword | 51 | 50 | 48 | +2 | 0.0 | - | |
| 11 | My Ami Beach | 70 | 70 | 63 | +7 | 0.0 | - | |
| 12 | Admiral's Ransom | 51 | 48 | 49 | -1 | 1.5 | - | |
| 13 | Swiss Walt | 71 | 74 | 67 | +7 | 0.5 | - | |
| 14 | Princess Azariah | 62 | 62 | 59 | +3 | 0.0 | - |
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