Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse

String Of Lights

Reference for assessment

Exact Matches

2 / 16

Calculated = Official

Close Matches

2 / 16

Within 2 points

Significant Diffs

10 / 16

More than 5 points

Detailed Assessment

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Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Bella Attrice        2    60.0    1    0.00     7.0   60    76           66    +6
2    String Of Lights     4    60.0    2    0.75     12.0  66    66           66    +0
3    Miss Prior           3    58.0    3    1.50     10.5  64    65           65    +1
4    Stu's Girl           3    58.5    4    1.60     10.5  80    66           70    -10
5    Ponte Vecchio        2    60.0    5    3.85     7.0   59    76           76    +17
6    Opera Verse          4    60.0    6    4.85     12.0  54    66           66    +12
7    Choc' Late           3    58.5    7    5.85     10.5  38    66           66    +28
8    Macarina Mambo       5    60.0    8    6.35     0.0   -     90           90    +90
9    Lady Theia           2    58.0    9    6.45     7.0   -     72           72    +72
10   Tune Again           6    60.0    10   7.70     0.0   55    90           90    +35
11   Karoo Bokkie         2    58.0    11   8.95     7.0   -     72           72    +72
12   Carved In Stone      4    60.0    12   9.70     12.0  40    66           66    +26
13   Very Var Var         2    58.0    13   9.75     7.0   -     72           72    +72
14   Big Spender          3    60.0    14   13.00    10.5  30    69           69    +39
15   Over The Atlantic    3    55.5    15   14.25    10.5  69    60           60    -9
16   Poise Panache        6    60.0    16   27.50    0.0   -     90           90    +90
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Horse-by-Horse Comparison

Pos	Horse	Pre-Rating	Official New	Calculated	Discrepancy	WFA (kg)	Line Horse
1	Bella Attrice	60	66	66	✓ Match	7.0	-
2	String Of Lights Line	66	66	66	✓ Match	12.0
3	Miss Prior	64	61	65	-4	10.5	-
4	Stu's Girl	80	67	70	-3	10.5	-
5	Ponte Vecchio	59	56	76	-20	7.0	-
6	Opera Verse	54	50	66	-16	12.0	-
7	Choc' Late	38	56	66	-10	10.5	-
8	Macarina Mambo	-	48	90	-42	0.0	-
9	Lady Theia	-	53	72	-19	7.0	-
10	Tune Again	55	50	90	-40	0.0	-
11	Karoo Bokkie	-	68	72	-4	7.0	-
12	Carved In Stone	40	41	66	-25	12.0	-
13	Very Var Var	-	48	72	-24	7.0	-
14	Big Spender	30	30	69	-39	10.5	-
15	Over The Atlantic	69	56	60	-4	10.5	-
16	Poise Panache	-	40	90	-50	0.0	-

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