Official NHA Assessment

Race 4: TAKE A BET WINA NUMBA NUMBA MAIDEN PLATE (F & M) (For Maiden F & M. R15 000 Win bonus ROA Members)

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Line Horse
Lady Greensleeves
Reference for assessment
Exact Matches
2 / 11
Calculated = Official
Close Matches
4 / 11
Within 2 points
Significant Diffs
6 / 11
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    Sound Machine        3    60.0    1    0.00     4.0   73    55           55    -18
2    Lady Greensleeves    2    60.0    2    6.75     0.0   63    63           63    +0
3    Liberty Flag         2    60.0    3    7.00     0.0   56    63           63    +7
4    Empressofnormandy    3    60.0    4    7.25     4.0   73    55           63    -10
5    Quick Trip           2    60.0    5    8.35     0.0   78    63           68    -10
6    Like A Butterfly     3    60.0    6    14.60    4.0   65    55           55    -10
7    The Navy Lark        4    60.0    7    19.85    2.0   57    59           59    +2
8    Choc' Late           3    56.0    8    20.15    4.0   48    47           47    -1
9    Tambourine Girl      3    60.0    9    20.45    4.0   -     55           55    +55
10   It's Up To Me        2    60.0    10   99.99    0.0   -     63           63    +63
99   Lady Lennox          2    60.0    99   0.00     0.0   -     63           63    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Sound Machine 73 83 55 +28 4.0 -
2 Lady Greensleeves Line 63 63 63 ✓ Match 0.0
3 Liberty Flag 56 59 63 -4 0.0 -
4 Empressofnormandy 73 61 63 -2 4.0 -
5 Quick Trip 78 82 68 +14 0.0 -
6 Like A Butterfly 65 54 55 -1 4.0 -
7 The Navy Lark 57 74 59 +15 2.0 -
8 Choc' Late 48 56 47 +9 4.0 -
9 Tambourine Girl - - 55 -55 4.0 -
10 It's Up To Me - 45 63 -18 0.0 -
99 Lady Lennox - 63 63 ✓ Match 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