Official NHA Assessment

Race 1: #THISISRACING WELCOMES YOU MAIDEN PLATE (For all Maidens)

Back to Race
Line Horse
Covert Operator
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
1 / 11
Within 2 points
Significant Diffs
9 / 11
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    The Mauritian        3    59.0    1    0.00     8.5   -     45           6     +6
2    Sylvan Theater       3    59.0    2    2.40     8.5   -     45           45    +45
3    Mo The Man           3    59.0    3    2.90     8.5   -     45           45    +45
4    We've Got Tonight    3    59.0    4    4.15     8.5   -     45           45    +45
5    Covert Operator      6    60.0    5    4.85     0.0   64    64           64    +0
6    Warbonnet Creek (IR  4    60.0    6    8.35     10.0  52    44           44    -8
7    California Boy       3    59.0    7    8.40     8.5   -     45           45    +45
8    Giocatore            2    59.0    8    11.00    5.5   73    51           63    -10
9    Tincture Time        3    59.0    9    11.60    8.5   -     45           45    +45
10   Tiger In Red         3    59.0    10   13.70    8.5   -     45           45    +45
99   Circus Lights        5    59.0    99   0.00     0.0   -     62           62    +0
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 The Mauritian - 100 6 +94 8.5 -
2 Sylvan Theater - 73 45 +28 8.5 -
3 Mo The Man - 83 45 +38 8.5 -
4 We've Got Tonight - 75 45 +30 8.5 -
5 Covert Operator Line 64 77 64 +13 0.0
6 Warbonnet Creek (IRE) 52 56 44 +12 10.0 -
7 California Boy - 53 45 +8 8.5 -
8 Giocatore 73 67 63 +4 5.5 -
9 Tincture Time - 53 45 +8 8.5 -
10 Tiger In Red - 66 45 +21 8.5 -
99 Circus Lights - 64 62 +2 0.0 -
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