Official NHA Assessment

Race 5: OLYMPIC FLAG MR 72 HANDICAP (Open)

Back to Race
Line Horse
Gimme A Rainbow
Reference for assessment
Exact Matches
1 / 11
Calculated = Official
Close Matches
4 / 11
Within 2 points
Significant Diffs
7 / 11
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Preemptive Strike    4    59.0    1    0.00     12.0  70    70           70    +0
2    Big Slick            2    55.5    2    1.05     7.0   71    73           73    +2
3    Gimme A Rainbow      4    60.5    3    1.45     12.0  73    73           73    +0
4    Final Destiny        4    52.0    4    1.75     12.0  52    56           56    +4
5    Oshakati             2    59.5    5    3.15     7.0   71    81           81    +10
6    Lord Edward          2    55.0    6    3.55     7.0   62    72           72    +10
7    Intrepid             3    59.5    7    3.60     10.5  71    74           74    +3
8    Roy's July Magic     4    52.5    8    4.70     12.0  55    57           57    +2
9    Saipan               5    52.0    9    4.95     0.0   52    80           80    +28
10   Son Of Silk          4    60.0    10   12.35    12.0  72    72           72    +0
99   Guiseppi's Song      4    55.0    99   0.00     12.0  -     62           62    +0
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Preemptive Strike 70 70 70 ✓ Match 12.0 -
2 Big Slick 71 64 73 -9 7.0 -
3 Gimme A Rainbow Line 73 74 73 +1 12.0
4 Final Destiny 52 50 56 -6 12.0 -
5 Oshakati 71 59 81 -22 7.0 -
6 Lord Edward 62 52 72 -20 7.0 -
7 Intrepid 71 73 74 -1 10.5 -
8 Roy's July Magic 55 48 57 -9 12.0 -
9 Saipan 52 52 80 -28 0.0 -
10 Son Of Silk 72 65 72 -7 12.0 -
99 Guiseppi's Song - 60 62 -2 12.0 -
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