๐ŸŽ‚ Birthday Paradox ยท Sports
โ† All sports

Olympic Fencing

Delegation

458 team lists ยท 5,598 player entries ยท avg team size 12.2

Read this sport as a comparison between raw coincidence and what team size alone predicts. Here, the real rate is +4.4 points above the birthday-paradox baseline.

Real team lists
23.4%
teams with shared birthdays
Why it matters: This is the headline rate, but it should never be read without team size.
Expected from size
19.0%
from avg team size
Why it matters: This is the fair baseline: what same-size random teams would do.
Gap from expected
+4.4 points
real โˆ’ expected
Why it matters: Positive means the sport has more birthday matches than size alone predicts.
Team lists
458
teams analysed
Why it matters: Enough team lists for a useful sport-level read.
What to notice: The best question on a sport page is not "is the real rate high?" but "is it high after accounting for team size?" That is what the gap card is answering.

Country comparison

Countries with the most team lists for Olympic Fencing, charted by the share of teams with at least one shared birthday.

What to compare: This view is best for spotting sample-shape differences inside a sport. Among the highest-sample countries, USA has the highest observed rate, with an average team size of 17.3.

Gender split inside this sport

Real and expected rates for labelled team lists in this sport.

Why it matters: The gender gap is mostly a team-size story. Women have the larger average team size here (13.7 athletes), so their birthday-match rate naturally rises.

By country

Top 40 countries by team-list count.

CountryTeam listsAvg playersReal
FRA2622.853.8%
ITA2617.346.2%
USA2517.356.0%
HUN2415.545.8%
POL2112.423.8%
GBR1917.110.5%
SWE188.422.2%
SUI168.343.8%
ROU1610.96.3%
AUT157.820.0%
GER1413.735.7%
CAN149.27.1%
JPN138.57.7%
ARG139.015.4%
KOR1112.518.2%
BEL1115.59.1%
EGY117.60.0%
DEN109.40.0%
CHN1015.130.0%
NED911.822.2%
URS918.944.4%
CUB810.40.0%
NOR85.412.5%
RUS715.70.0%
ESP710.40.0%
POR77.10.0%
UKR79.00.0%
MEX68.516.7%
AUS611.316.7%
TCH68.20.0%
VEN57.60.0%
FRG519.20.0%
BRA58.020.0%
HKG46.00.0%
FIN46.50.0%
BUL45.050.0%
TUN36.033.3%
KUW38.70.0%
LUX37.033.3%
COL35.00.0%
What to notice: Countries with larger average teams will naturally show more shared birthdays. The country list is most useful for finding which samples are driving this sport's overall rate.

By gender

Where the dataset records it.

GenderTeam listsRealExpectedGap
Women29825.5%23.0%+2.5 points
Men16019.4%11.5%+7.9 points

Sample team lists

Largest teams in the dataset.

TeamSeasonPlayersRepeatsExpected chance
FRA Fencing (1900 Summer) ยท FRA1900 Summer12616100.0%
FRA Fencing (1924 Summer) ยท FRA1924 Summer26259.8%
FRA Fencing (1908 Summer) ยท FRA1908 Summer25156.9%
POL Fencing (1960 Summer) ยท POL1960 Summer23250.7%
ITA Fencing (2020 Summer) ยท ITA2020 Summer23150.7%
USA Fencing (1924 Summer) ยท USA1924 Summer22247.6%
GBR Fencing (1908 Summer) ยท GBR1908 Summer22147.6%
ROC Fencing (2020 Summer) ยท ROC2020 Summer22147.6%
FRA Fencing (1960 Summer) ยท FRA1960 Summer21144.4%
FRA Fencing (1948 Summer) ยท FRA1948 Summer21144.4%
What to notice: The sample team lists show the mechanics: once the player count gets large, the expected chance climbs quickly, and each repeat is another player landing on a date already present.