Official NHA Assessment
Race 6: wsb.co.za SOUTHERN CROSS STAKES (Grade 2) (For Fillies & Mares, WFA plus Penalties)
Line Horse
Santa Maria
Reference for assessment
Exact Matches
2 / 11
Calculated = Official
Close Matches
5 / 11
Within 2 points
Significant Diffs
3 / 11
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Princess Calla 4 60.0 1 0.00 7.0 121 108 108 -13 2 Iphiko 3 58.0 2 0.50 6.0 96 106 106 +10 3 Stiptelik (AUS) 3 58.0 3 0.60 6.0 92 106 106 +14 4 Santa Maria 3 58.0 4 0.80 6.0 106 106 106 +0 5 Bella Chica 3 58.0 5 0.85 6.0 105 106 106 +1 6 Going Up 3 58.0 6 2.10 6.0 98 106 106 +8 7 Sonic Burst 4 58.0 7 4.10 7.0 92 104 104 +12 8 Hunting Trip 2 54.5 8 4.60 4.0 89 103 103 +14 9 Gimme Dat 3 59.0 9 5.00 6.0 109 108 108 -1 10 Whoa Whoa Whoa (AUS 3 58.0 10 5.20 6.0 101 106 106 +5 11 Phedra 3 58.0 11 5.40 6.0 99 106 106 +7 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Princess Calla | 121 | 127 | 108 | +19 | 7.0 | - | |
| 2 | Iphiko | 96 | 111 | 106 | +5 | 6.0 | - | |
| 3 | Stiptelik (AUS) | 92 | 104 | 106 | -2 | 6.0 | - | |
| 4 | Santa Maria Line | 106 | 106 | 106 | ✓ Match | 6.0 | ||
| 5 | Bella Chica | 105 | 106 | 106 | ✓ Match | 6.0 | - | |
| 6 | Going Up | 98 | 110 | 106 | +4 | 6.0 | - | |
| 7 | Sonic Burst | 92 | 81 | 104 | -23 | 7.0 | - | |
| 8 | Hunting Trip | 89 | 96 | 103 | -7 | 4.0 | - | |
| 9 | Gimme Dat | 109 | 107 | 108 | -1 | 6.0 | - | |
| 10 | Whoa Whoa Whoa (AUS) | 101 | 108 | 106 | +2 | 6.0 | - | |
| 11 | Phedra | 99 | 103 | 106 | -3 | 6.0 | - |
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