Official NHA Assessment

Race 4: WSB MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

Back to Race
Line Horse
Navy Strength
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
8 / 10
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Thousand Ships       3    60.0    1    0.00     2.5   -     69           6     +6
2    Navy Strength        3    60.0    2    0.40     2.5   74    74           74    +0
3    Futurismo            3    60.0    3    1.65     2.5   -     72           72    +72
4    Jem Rock             5    60.0    4    2.40     0.0   60    76           76    +16
5    Aeroforce            3    60.0    5    2.60     2.5   -     71           71    +71
6    Tin Cup              3    60.0    6    6.60     2.5   -     69           69    +69
7    Royal Rhapsody       3    60.0    7    6.90     2.5   -     69           69    +69
8    Petrossian           3    60.0    8    11.15    2.5   71    69           69    -2
9    Naushon              3    60.0    9    22.65    2.5   72    69           69    -3
99   Watch And Learn      3    60.0    99   0.00     2.5   -     69           69    +0
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Thousand Ships - 75 6 +69 2.5 -
2 Navy Strength Line 74 97 74 +23 2.5
3 Futurismo - 60 72 -12 2.5 -
4 Jem Rock 60 57 76 -19 0.0 -
5 Aeroforce - 60 71 -11 2.5 -
6 Tin Cup - 74 69 +5 2.5 -
7 Royal Rhapsody - - 69 -69 2.5 -
8 Petrossian 71 61 69 -8 2.5 -
9 Naushon 72 68 69 -1 2.5 -
99 Watch And Learn - 42 69 -27 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