Official NHA Assessment

Race 5: WSB GROOM'S INITIATIVE GRADUATION PLATE (For 1 & 2 Time Winners & Maidens)

Back to Race
Line Horse
Hawkbill
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
4 / 8
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Guy Gibson           2    56.0    1    0.00     0.0   105   103          103   -2
2    Hawkbill             4    56.0    2    1.50     3.5   99    99           99    +0
3    Reny                 2    56.5    3    3.00     0.0   106   106          106   +0
4    Pewter Sky           3    56.0    4    5.25     7.0   78    89           89    +11
5    Royal Edition        4    55.5    5    6.50     3.5   89    95           95    +6
6    Exhale               3    57.0    6    7.75     7.0   71    91           91    +20
7    King's Express       3    56.0    7    9.50     7.0   80    89           89    +9
8    Hotarubi             4    59.0    8    9.75     3.5   95    102          102   +7
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Guy Gibson 105 99 103 -4 0.0 -
2 Hawkbill Line 99 100 99 +1 3.5
3 Reny 106 91 106 -15 0.0 -
4 Pewter Sky 78 71 89 -18 7.0 -
5 Royal Edition 89 92 95 -3 3.5 -
6 Exhale 71 66 91 -25 7.0 -
7 King's Express 80 102 89 +13 7.0 -
8 Hotarubi 95 98 102 -4 3.5 -
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