Official NHA Assessment

Race 4: TAB 4RACING APP MR 66 HANDICAP (Open)

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Line Horse

Fiery Duke

Reference for assessment

Exact Matches

1 / 18

Calculated = Official

Close Matches

7 / 18

Within 2 points

Significant Diffs

6 / 18

More than 5 points

Detailed Assessment

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Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Rainbow Thief        2    60.5    1    0.00     2.5   72    69           72    +0
2    Jaquar Cat           3    55.5    2    0.25     3.5   56    57           57    +1
3    Fiery Duke           3    57.0    3    1.50     3.5   60    60           60    +0
4    Angelsea             3    56.5    4    1.60     3.5   59    59           59    +0
5    Open Secret          2    58.5    5    2.60     2.5   68    65           65    -3
6    Absolu Noir          8    57.5    6    2.85     0.0   61    68           68    +7
7    Warbonnet Creek (IR  4    57.5    7    4.35     4.0   59    60           60    +1
8    Callmemrgreenlight   3    53.0    8    4.40     3.5   52    52           52    +0
9    Sanctity             4    58.0    9    4.65     4.0   62    61           61    -1
10   Mr Bodacious         2    59.0    10   5.40     2.5   69    66           66    -3
11   Joyous Jubilee (AUS  2    58.5    11   5.50     2.5   68    65           65    -3
12   Quenanza             4    53.0    12   6.00     4.0   52    51           51    -1
13   Stay The Course      4    60.5    13   8.25     4.0   67    66           66    -1
14   Granddaddy Purple    3    55.0    14   9.00     3.5   56    56           56    +0
15   High Legislation     3    57.5    15   9.75     3.5   61    61           61    +0
16   Higher Purpose       4    59.0    16   19.25    4.0   64    63           63    -1
99   Spanish Fort         5    57.0    99   0.00     0.0   -     67           67    +0
99   Cape Princess        3    52.0    99   0.00     3.5   -     50           50    +0
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Horse-by-Horse Comparison

Pos	Horse	Pre-Rating	Official New	Calculated	Discrepancy	WFA (kg)	Line Horse
1	Rainbow Thief	72	71	72	-1	2.5	-
2	Jaquar Cat	56	46	57	-11	3.5	-
3	Fiery Duke Line	60	72	60	+12	3.5
4	Angelsea	59	64	59	+5	3.5	-
5	Open Secret	68	63	65	-2	2.5	-
6	Absolu Noir	61	50	68	-18	0.0	-
7	Warbonnet Creek (IRE)	59	56	60	-4	4.0	-
8	Callmemrgreenlight	52	45	52	-7	3.5	-
9	Sanctity	62	61	61	✓ Match	4.0	-
10	Mr Bodacious	69	65	66	-1	2.5	-
11	Joyous Jubilee (AUS)	68	61	65	-4	2.5	-
12	Quenanza	52	49	51	-2	4.0	-
13	Stay The Course	67	67	66	+1	4.0	-
14	Granddaddy Purple	56	50	56	-6	3.5	-
15	High Legislation	61	58	61	-3	3.5	-
16	Higher Purpose	64	61	63	-2	4.0	-
99	Spanish Fort	-	50	67	-17	0.0	-
99	Cape Princess	-	45	50	-5	3.5	-

Assessment Methodology

Calculation Steps:

Identify Line Horse - consistent performer used as reference
Calculate WFA Allowance based on age, distance, and month
Apply Drag Adjustment for beaten margin
Calculate Actual Weight Performance:
Weight - Drag - WFA
Compare to Line Horse to determine race rating
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