Have a look at Doubles: https://igpmanager.com/play/?url=igp-halloffame/doubles
The top 6 have exactly 255 Doubles. This got to be a bug!
Same for Triples. Dudek seems to have more than 255 Triples.
I came across this, cause 255 is kind of 'magic number' in IT:
255(dec) = FF(hex) = 1111 1111(bi)