Official NHA Assessment
Race 4: WSB LEADERS IN ANTE POST BETTING MR 76 HANDICAP (Open)
Line Horse
Palace Revolt
Reference for assessment
Exact Matches
1 / 18
Calculated = Official
Close Matches
6 / 18
Within 2 points
Significant Diffs
6 / 18
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Rockaroundtheclock 2 58.0 1 0.00 4.0 80 72 80 +0 2 Maverick Queen 3 60.0 2 0.70 6.0 76 72 72 -4 3 Palace Revolt 2 58.0 3 1.70 4.0 72 72 72 +0 4 Play With The Wind 3 55.5 4 2.30 6.0 75 63 65 -10 5 Prophet 2 58.5 5 3.55 4.0 73 73 73 +0 6 Royal Horizon 3 56.5 6 3.65 6.0 69 65 65 -4 7 Dezire 3 58.5 7 4.65 6.0 76 69 69 -7 8 Spy Story 3 57.5 8 4.95 6.0 71 67 67 -4 9 Daring Act 4 53.5 9 5.85 7.0 63 57 57 -6 10 Prized Platinum 3 59.0 10 6.60 6.0 74 70 70 -4 11 Spirited Girl 4 55.0 11 6.70 7.0 66 60 60 -6 12 Falcon Strike 2 54.0 12 8.40 4.0 64 64 64 +0 13 She's All Mine 3 59.0 13 10.00 6.0 82 70 72 -10 14 Kotinos 3 54.5 14 11.00 6.0 65 61 61 -4 15 Sergeant Soqrat 2 58.5 15 11.10 4.0 81 73 73 -8 99 Bumps Last Grind 2 59.5 99 0.00 4.0 - 75 75 +0 99 Biofarmer 4 61.0 99 0.00 7.0 - 72 72 +0 99 Red Penny 2 60.0 99 0.00 4.0 - 76 76 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Rockaroundtheclock | 80 | 83 | 80 | +3 | 4.0 | - | |
| 2 | Maverick Queen | 76 | 76 | 72 | +4 | 6.0 | - | |
| 3 | Palace Revolt Line | 72 | 64 | 72 | -8 | 4.0 | ||
| 4 | Play With The Wind | 75 | 80 | 65 | +15 | 6.0 | - | |
| 5 | Prophet | 73 | 66 | 73 | -7 | 4.0 | - | |
| 6 | Royal Horizon | 69 | 68 | 65 | +3 | 6.0 | - | |
| 7 | Dezire | 76 | 72 | 69 | +3 | 6.0 | - | |
| 8 | Spy Story | 71 | 66 | 67 | -1 | 6.0 | - | |
| 9 | Daring Act | 63 | 60 | 57 | +3 | 7.0 | - | |
| 10 | Prized Platinum | 74 | 72 | 70 | +2 | 6.0 | - | |
| 11 | Spirited Girl | 66 | 61 | 60 | +1 | 7.0 | - | |
| 12 | Falcon Strike | 64 | 60 | 64 | -4 | 4.0 | - | |
| 13 | She's All Mine | 82 | 79 | 72 | +7 | 6.0 | - | |
| 14 | Kotinos | 65 | 59 | 61 | -2 | 6.0 | - | |
| 15 | Sergeant Soqrat | 81 | 71 | 73 | -2 | 4.0 | - | |
| 99 | Bumps Last Grind | - | 75 | 75 | ✓ Match | 4.0 | - | |
| 99 | Biofarmer | - | 78 | 72 | +6 | 7.0 | - | |
| 99 | Red Penny | - | 85 | 76 | +9 | 4.0 | - |
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