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Canada's Premier Masters Throwing Club

Throwers Club 

ABOUT AGE GRADED SCORING

Age-Graded Scoring

Obviously as a person gets older, performances will naturally decline.  To allow older athletes to complete on a level playing field, the concept of age-graded performance was developed to account for this natural decline in performance.  The age-graded tables follow the same principles as the IAAF points tables for each event but they differ by assigning an age-graded factor for each 5 year age class. 


WMA (formerly WAVA), the world governing body for Masters Track & Field, first developed these tables in 1989.  Subsequently the tables were updated in 1991, 1994, 2002, 2006, 2010 & most recently in 2014.  WMA regularly updates these tables based on analysis of masters performances around the world.  The most recent version released in 2014 can be downloaded at WMA 2014.  Note that when comparing older results it is very important to determine what version of table was used in the points calculation & if necessary recalculate old results using the current table.  In some cases changes in weights of implements make this very tricky & adjustments have to made to the factors used depending on the weight of the implements.


There are three parts to this calculation: the age-graded mark (AG Mark), the age-graded performance percentage (PERF%) & the age-graded points (PTS).


The first step is to calculate the AG Mark as follows:

AG Mark = Performance x age-graded factor

Examples: Competitor A - M51 in Hammer throws 41.12m

AG Mark = 41.12 x 1.1864 = 48.78

Competitor B - W71 in Discus throws 19.22m

AG Mark = 19.22 x 2.0542 = 39.78


Once the AG Mark is calculated, the PERF% is calculated by dividing the World Record by the age factor  to give the Age Standard.  The PERF% is then ratio of the AG Mark divided by the Age Standard.  Current World Records used in the calculation are as follows:

Men World Records
Hammer
Shot Put
Discus
Javelin
Weight
86.74
23.12
74.08
98.48
25.41
Women World Records
Hammer
Shot
Discus
Javelin
Weight
81.08
22.63
76.80
72.28
24.57





Source: IAAF

Examples: Competitor A - M51 in Hammer throws 41.12m

AGE STD = World Record/Age Factor

86.74/1.1864 = 73.11

PERF% = (41.12/73.11) x 100% = 56.24%

Competitor B - W71 in Discus throws 19.22m

AGE STD = World Record/Age Factor
76.80/2.0542 = 37.38
PERF% = (19.22/37.38) x 100% = 51.41%


Note that the PERF% allows performances of men & women of all ages to be compared equally. Typical percentages are as follows:

100% = Approximate World-Record Level
90+% = World Class
80+% = National Class
70+% = Regional Class
60+% = Local Class


The final step is to calculate the age-graded points which are used in scoring the throws pentathlon & throws triathlon.  Points for each performance are calculated using the IAAF formula:

Points = a (AG Mark - b) ^ c

The factors for a, b and c in the formula in each event for Men & Women are shown in the following tables:

Factors for Men
Event
a (no units)
b (metres)
c (no units)
Hammer
13.0449
7
1.05
Shot Put
51.39
1.5
1.05
Discus
12.91
4
1.10
Javelin
10.14
7
1.08
Weight
47.8338
1.5
1.05

Factors for Women

Event
a (no units)
b (metres)
c (no units)
Hammer
17.5458
6
1.05
Shot Put
56.0211
1.5
1.05
Discus
12.3311
3
1.10
Javelin
15.9803
3.8
1.04
Weight
52.1403
1.5
1.05











Examples: Competitor A - M51 in Hammer throws 41.12m
AG Mark = 48.78

PTS = 13.0449 x (48.78 - 7) ^1.05 = 656 pts

Competitor B - W71 in Discus throws 19.22m
AG Mark = 39.78

PTS = 12.3311 x (39.78 - 3)  1.10 = 644 pts


A typical final scoresheet for a throws pentathlon looks like this:










Howard Grubb of the Cheshire County Athletic Association has built a series of age-grade calculators for multi-events  including throws pentathlon.  However these use the WMA 2010 tables.  More recently he has posted a new calculator  for track & field events using the WMA 2014 tables. 


USATF Masters Throws have developed a spreadsheet for calculating age-graded points for throws pentathlon & ultra weight pentathlon that can be downloaded. These spreadsheets use the WMA 2014 tables.