Official NHA Assessment

Race 6: RACEHORSE OWNERS ASSOCIATION FM 70 HANDICAP (F & M) (Fillies and Mares)

Back to Race
Line Horse
Scarborough Fair
Reference for assessment
Exact Matches
2 / 12
Calculated = Official
Close Matches
5 / 12
Within 2 points
Significant Diffs
5 / 12
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Owlette              4    54.0    1    0.00     6.0   58    43           58    +0
2    Silver Slippers      3    55.5    2    0.50     8.5   62    46           52    -10
3    Pam's Princess       3    61.5    3    0.55     8.5   74    58           64    -10
4    Scarborough Fair     5    61.5    4    1.80     0.0   73    73           73    +0
5    Strada Statale       5    55.0    5    5.05     0.0   60    57           57    -3
6    Zulu War Cry         4    52.0    6    5.15     6.0   53    39           43    -10
7    Paris Opera          4    60.5    7    5.40     6.0   71    56           61    -10
8    River Cafe           4    60.0    8    5.50     6.0   73    55           63    -10
9    Miss Jacqueline      3    52.5    9    10.00    8.5   56    35           46    -10
10   Sing Girl Sing       3    59.5    10   10.50    8.5   70    49           60    -10
11   Rose Of Bayeux       3    55.0    11   10.75    8.5   61    40           51    -10
99   Big Sky Country      4    58.0    99   0.00     6.0   -     51           51    +0
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Owlette 58 56 58 -2 6.0 -
2 Silver Slippers 62 63 52 +11 8.5 -
3 Pam's Princess 74 82 64 +18 8.5 -
4 Scarborough Fair Line 73 72 73 -1 0.0
5 Strada Statale 60 57 57 ✓ Match 0.0 -
6 Zulu War Cry 53 53 43 +10 6.0 -
7 Paris Opera 71 66 61 +5 6.0 -
8 River Cafe 73 74 63 +11 6.0 -
9 Miss Jacqueline 56 49 46 +3 8.5 -
10 Sing Girl Sing 70 62 60 +2 8.5 -
11 Rose Of Bayeux 61 77 51 +26 8.5 -
99 Big Sky Country - 51 51 ✓ Match 6.0 -
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