Official NHA Assessment

Race 8: NEXT VAAL RACEMEETING THURSDAY 12 OCTOBER MR 80 HANDICAP (Open)

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Line Horse
Ziyasha
Reference for assessment
Exact Matches
0 / 14
Calculated = Official
Close Matches
0 / 14
Within 2 points
Significant Diffs
14 / 14
More than 5 points
Detailed Assessment
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Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
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1    Exchange Student     4    60.0    1    0.00     10.0  91    85           91    +0
2    Ice Star             2    60.0    2    0.40     5.5   91    94           94    +3
3    Ziyasha              2    59.5    3    2.75     5.5   93    93           93    +0
4    Axel Collins         5    57.0    4    3.00     0.0   74    99           99    +25
5    Brosnan              2    57.5    5    3.75     5.5   75    89           89    +14
6    Pendragon            5    57.5    6    4.25     0.0   75    100          100   +25
7    Happy Analia         4    53.5    7    4.35     10.0  78    72           72    -6
8    Fennec Fox           5    55.0    8    4.45     0.0   70    95           95    +25
9    Micke's Bomb         4    56.0    9    4.50     10.0  83    77           77    -6
10   Daring Act           4    59.0    10   6.00     10.0  89    83           83    -6
11   Successful Secret    4    55.5    11   6.50     10.0  74    76           76    +2
12   Rozara               3    58.0    12   8.25     8.5   76    84           84    +8
99   Kings Road           5    63.0    99   0.00     0.0   -     111          111   +0
99   Covert Operator      6    61.5    99   0.00     0.0   -     108          108   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Exchange Student 91 104 91 +13 10.0 -
2 Ice Star 91 112 94 +18 5.5 -
3 Ziyasha Line 93 118 93 +25 5.5
4 Axel Collins 74 55 99 -44 0.0 -
5 Brosnan 75 75 89 -14 5.5 -
6 Pendragon 75 73 100 -27 0.0 -
7 Happy Analia 78 78 72 +6 10.0 -
8 Fennec Fox 70 64 95 -31 0.0 -
9 Micke's Bomb 83 60 77 -17 10.0 -
10 Daring Act 89 60 83 -23 10.0 -
11 Successful Secret 74 65 76 -11 10.0 -
12 Rozara 76 73 84 -11 8.5 -
99 Kings Road - 79 111 -32 0.0 -
99 Covert Operator - 77 108 -31 0.0 -
Assessment Methodology
Calculation Steps:
  1. Identify Line Horse - consistent performer used as reference
  2. Calculate WFA Allowance based on age, distance, and month
  3. Apply Drag Adjustment for beaten margin
  4. Calculate Actual Weight Performance:
    Weight - Drag - WFA
  5. Compare to Line Horse to determine race rating
  6. 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