Official NHA Assessment

Race 8: NEXT VAAL RACEMEETING THURSDAY 24 JULY MR 68 HANDICAP (Open)

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Line Horse
Palace Prince
Reference for assessment
Exact Matches
0 / 15
Calculated = Official
Close Matches
0 / 15
Within 2 points
Significant Diffs
14 / 15
More than 5 points
Detailed Assessment
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Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
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1    Royal Horizon        3    56.5    1    0.00     0.5   61    74           61    +0
2    Palace Prince        2    59.0    2    0.80     0.0   84    84           84    +0
3    After Hours          7    60.5    3    1.00     0.0   69    87           87    +18
4    Can't Catch Me       5    52.0    4    1.10     0.0   51    70           70    +19
5    Sheets And Goggles   3    55.5    5    1.30     0.5   66    75           75    +9
6    Northern Kitten      3    53.5    6    1.35     0.5   55    71           71    +16
7    Sail The Sky         4    57.0    7    4.95     0.5   70    75           75    +5
8    Sneak Preview        3    59.0    8    6.05     0.5   66    79           79    +13
9    Like A Prayer        3    60.5    9    6.30     0.5   71    82           82    +11
10   Perini Palace        4    56.5    10   8.55     0.5   61    74           74    +13
11   Gimme The Flame      5    52.0    11   11.05    0.0   50    66           66    +16
12   Callaburn            2    53.5    12   14.80    0.0   55    69           69    +14
13   Pearl In Her Crown   2    60.5    13   17.30    0.0   71    83           83    +12
14   City Lights          4    51.5    14   18.55    0.5   59    64           64    +5
99   Count Your Chances   5    55.5    99   0.00     0.0   -     73           73    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Royal Horizon 61 68 61 +7 0.5 -
2 Palace Prince Line 84 103 84 +19 0.0
3 After Hours 69 79 87 -8 0.0 -
4 Can't Catch Me 51 58 70 -12 0.0 -
5 Sheets And Goggles 66 63 75 -12 0.5 -
6 Northern Kitten 55 67 71 -4 0.5 -
7 Sail The Sky 70 62 75 -13 0.5 -
8 Sneak Preview 66 63 79 -16 0.5 -
9 Like A Prayer 71 63 82 -19 0.5 -
10 Perini Palace 61 56 74 -18 0.5 -
11 Gimme The Flame 50 50 66 -16 0.0 -
12 Callaburn 55 52 69 -17 0.0 -
13 Pearl In Her Crown 71 72 83 -11 0.0 -
14 City Lights 59 52 64 -12 0.5 -
99 Count Your Chances - 51 73 -22 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