Shortly after the Floyd Mayweather vs Conor McGregor boxing match was made official, quite a number of people have campaigned to be on similar cross-over matches on the undercard.
UFC heavyweight champion Stipe Miocic, who has a background in amateur boxing, has called out heavyweight boxing champion Anthony Joshua.
Longtime featherweight champion Cris Cyborg has also asked once again to fight current lineal boxing champ Cecilia Brækhus.
Featherweight contender Cub Swanson has also asked to join in, going on social media to ask for a bout against former two-division champion Paul Malignaggi.