Of Calzaghes 23 title fights, only 9 have taken place in Wales.
Math:
[9]/[23] = 39.13%
39.13% of Joe Calzaghe's Championship fights have taken place in Wales.
Now for fun, lets bias this for every fighters inevitable home town first title defense.
[9-1]/[23-1] = 8/22 = 4/11 = 36.36% of Joe Calzaghe's Championship fights have taken place in wales.
Math:
[9]/[23] = 39.13%
39.13% of Joe Calzaghe's Championship fights have taken place in Wales.
Now for fun, lets bias this for every fighters inevitable home town first title defense.
[9-1]/[23-1] = 8/22 = 4/11 = 36.36% of Joe Calzaghe's Championship fights have taken place in wales.

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