Official NHA Assessment

Race 8: BETWAY SUMMER CUP TICKETS ARE ON SALE ON TICKETPRO GRADUATION PLATE (F & M) (For Maidens, 1 & 2 Time Winners F & M)

Back to Race
Line Horse
Clairwood Rose
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
5 / 8
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Perfect Miracle      3    56.5    1    0.00     8.5   95    88           78    -17
2    Pretty Persuasive    2    59.5    2    0.20     5.5   93    100          100   +7
3    Clairwood Rose       2    52.0    3    2.45     5.5   85    85           85    +0
4    A Bit Of Class       2    56.5    4    3.20     5.5   98    94           94    -4
5    Eight Hats           2    55.0    5    4.20     5.5   85    91           91    +6
6    Back From War        2    54.0    6    9.80     5.5   97    89           89    -8
7    Princess Keira       2    56.5    7    11.80    5.5   90    94           94    +4
99   Kia Kaha             3    56.0    99   0.00     8.5   -     87           87    +0
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Perfect Miracle 95 96 78 +18 8.5 -
2 Pretty Persuasive 93 102 100 +2 5.5 -
3 Clairwood Rose Line 85 77 85 -8 5.5
4 A Bit Of Class 98 98 94 +4 5.5 -
5 Eight Hats 85 64 91 -27 5.5 -
6 Back From War 97 86 89 -3 5.5 -
7 Princess Keira 90 87 94 -7 5.5 -
99 Kia Kaha - 71 87 -16 8.5 -
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