Official NHA Assessment

Race 3: BETWAY MAIDEN PLATE (F & M) (For Maiden F&M. R15 000 Win bonus ROA Members)

Back to Race
Line Horse
Ambitious Lady
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
6 / 11
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Hat's Lady           4    60.0    1    0.00     5.0   56    65           62    +6
2    Ambitious Lady       3    60.0    2    1.00     9.0   61    61           61    +0
3    Lunar Rainbow        3    57.0    3    3.50     9.0   -     52           52    +52
4    Plum Blossom         3    60.0    4    4.75     9.0   63    57           57    -6
5    Empress Wu           3    57.0    5    5.50     9.0   -     51           51    +51
6    Tik Tok Addiction    3    60.0    6    6.00     9.0   57    57           57    +0
7    Cantkeepasecret      2    57.0    7    8.40     0.0   -     69           69    +69
8    Bella Boop Boop      3    57.0    8    8.50     9.0   62    51           52    -10
9    Sienna Rae           2    57.0    9    12.75    0.0   62    69           69    +7
10   Chasing Shadows      3    57.0    10   20.25    9.0   60    51           51    -9
99   Pass The Baton       4    60.0    99   0.00     5.0   -     65           65    +0
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Hat's Lady 56 64 62 +2 5.0 -
2 Ambitious Lady Line 61 62 61 +1 9.0
3 Lunar Rainbow - 57 52 +5 9.0 -
4 Plum Blossom 63 53 57 -4 9.0 -
5 Empress Wu - 61 51 +10 9.0 -
6 Tik Tok Addiction 57 54 57 -3 9.0 -
7 Cantkeepasecret - 57 69 -12 0.0 -
8 Bella Boop Boop 62 58 52 +6 9.0 -
9 Sienna Rae 62 57 69 -12 0.0 -
10 Chasing Shadows 60 58 51 +7 9.0 -
99 Pass The Baton - 48 65 -17 5.0 -
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