Official NHA Assessment

Race 6: CAPE DERBY ON SATURDAY 25TH FEBRUARY MIDDLE STAKES (F & M) (For F & M 3-years and older with a nett rating of 95 & below

Back to Race
Line Horse
Metar
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
4 / 8
Within 2 points
Significant Diffs
1 / 8
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Time Flies           3    60.0    1    0.00     4.0   88    87           87    -1
2    Betty Boop           2    56.0    2    1.25     0.0   88    91           91    +3
3    Strawberry Light     3    50.0    3    1.55     4.0   77    70           70    -7
4    Metar                3    52.5    4    2.05     4.0   75    75           75    +0
5    Greengrowthelilacs   3    56.0    5    2.55     4.0   81    81           81    +0
6    Fleeting             3    58.0    6    4.80     4.0   84    83           83    -1
7    Totally Rocks        2    54.0    7    4.90     0.0   84    83           83    -1
8    Symphony Of Light    3    56.0    8    7.40     4.0   80    79           79    -1
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Time Flies 88 117 87 +30 4.0 -
2 Betty Boop 88 88 91 -3 0.0 -
3 Strawberry Light 77 74 70 +4 4.0 -
4 Metar Line 75 73 75 -2 4.0
5 Greengrowthelilacs 81 79 81 -2 4.0 -
6 Fleeting 84 82 83 -1 4.0 -
7 Totally Rocks 84 81 83 -2 0.0 -
8 Symphony Of Light 80 75 79 -4 4.0 -
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