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WORLD KBNWorld Federation of Martial Arts
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The 24-month window: why old results expire

Rankings measure current form. Results keep 100 % of their value for a year, 50 % for a second year, then leave the active table.

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The KBN table is a picture of the last two years, not a lifetime record. Every calculation uses the number of days between the event and the as-of date divided by 30.4375 (the average month). At 12.0 months a result is still full value; one day later it is worth half.

Karimov's active points if he never fights again
0158.8317.5476.3635 Points · Sept 26: 635Points · Dec 26: 635Points · Mar 27: 607.5Points · Jun 27: 502.5Points · Sept 27: 295Points · Dec 27: 155Points · Mar 28: 100Points · Jun 28: 55Points · Sept 28: 0 Sept 26Dec 26Mar 27Jun 27Sept 27Dec 27Mar 28Jun 28Sept 28
Illustrative projection from the verified record; each step is a result crossing the 12- or 24-month line.

What it means for athletes

  • Fight at least once a year to keep a live total.
  • A big result buys you two years of ranking presence, but it halves after one.
  • Founding-period applicants may submit results from the preceding 24 months; anything older is recorded but scores 0.
Expired bouts stay on the public record and in the verified W-L-D. Only their points leave.
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Figures in this article are computed from the KBN register at the time of reading. View, like and share counters on this demo site are sample values.