Official NHA Assessment

Race 1: ONLINE FORM GUIDE www.gallop.co.za OPEN MAIDEN (F & M) (For all Maiden Fillies & Mares)

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Line Horse
Siyabambelela
Reference for assessment
Exact Matches
1 / 13
Calculated = Official
Close Matches
2 / 13
Within 2 points
Significant Diffs
9 / 13
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    Wedding Vow          2    57.0    1    0.00     1.5   66    60           60    -6
2    Siyabambelela        4    62.0    2    1.00     0.0   73    73           73    +0
3    Come Together        3    59.0    3    3.70     2.5   70    62           62    -8
4    Peaceful Duchess     3    53.5    4    4.80     2.5   59    51           51    -8
5    Northern European    2    57.5    5    5.10     1.5   -     61           61    +61
6    Roy's Blossom        4    53.5    6    6.90     0.0   54    56           56    +2
7    Choctaw Ridge        3    60.5    7    8.70     2.5   -     65           65    +65
8    Wintery Mansion      2    57.5    8    9.90     1.5   -     61           61    +61
9    Miss Danon           2    58.5    9    11.10    1.5   72    63           63    -9
10   Surely Not           3    54.0    10   13.70    2.5   60    52           52    -8
11   Sybilla              3    60.5    11   19.50    2.5   -     65           65    +65
99   Tipperary            3    55.0    99   0.00     2.5   -     54           54    +0
99   Rosa Osiria          3    51.5    99   0.00     2.5   -     47           47    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Wedding Vow 66 72 60 +12 1.5 -
2 Siyabambelela Line 73 73 73 ✓ Match 0.0
3 Come Together 70 68 62 +6 2.5 -
4 Peaceful Duchess 59 57 51 +6 2.5 -
5 Northern European - - 61 - 1.5 -
6 Roy's Blossom 54 54 56 -2 0.0 -
7 Choctaw Ridge - - 65 -65 2.5 -
8 Wintery Mansion - - 61 - 1.5 -
9 Miss Danon 72 70 63 +7 1.5 -
10 Surely Not 60 60 52 +8 2.5 -
11 Sybilla - - 65 -65 2.5 -
99 Tipperary - 62 54 +8 2.5 -
99 Rosa Osiria - 57 47 +10 2.5 -
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