Official NHA Assessment

Race 1: Hollywoodbets KENILWORTH WELCOMES YOU MAIDEN PLATE (For all Maidens)

Back to Race
Line Horse
Iko Iko
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
2 / 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    Note To Self         2    57.0    1    0.00     0.5   -     70           6     +6
2    World Warrior        2    57.0    2    1.75     0.5   -     70           70    +70
3    Iko Iko              2    60.0    3    2.05     0.5   76    76           76    +0
4    Usa Dancer           2    53.0    4    3.80     0.5   -     62           62    +62
5    Siriano              2    57.0    5    4.00     0.5   -     70           70    +70
6    Time Honored         2    60.0    6    4.40     0.5   71    76           76    +5
7    Quicksmart           2    55.5    7    6.15     0.5   -     67           67    +67
8    King's Colour        2    57.0    8    9.40     0.5   -     70           70    +70
9    Mount Augustus       2    57.0    9    10.15    0.5   -     70           70    +70
10   Nomore Bullets       2    57.5    10   99.99    0.5   -     71           71    +71
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Note To Self - 118 6 +112 0.5 -
2 World Warrior - 82 70 +12 0.5 -
3 Iko Iko Line 76 76 76 ✓ Match 0.5
4 Usa Dancer - - 62 -62 0.5 -
5 Siriano - 80 70 +10 0.5 -
6 Time Honored 71 69 76 -7 0.5 -
7 Quicksmart - 74 67 +7 0.5 -
8 King's Colour - 62 70 -8 0.5 -
9 Mount Augustus - 82 70 +12 0.5 -
10 Nomore Bullets - 73 71 +2 0.5 -
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