Yesterday the two men weight in for the bout and both made the 130lb weight limit, with both men scaling 129.5lbs.
For Berchelt this bout sees him returning to the ring for the first time since he beat George Jupp back in March to win the title. The big punching Mexican is currently on an 8 fight stoppage run and is looking like an imposing fighter breaking through the ranks in impressive fashion.
For Chonlatarn this will be his 4th bout this year, and he's looking for a 10th straight win since losing to Lomachenko in November 2014. The busy Thai has twice come up short in world title bouts at 126lbs but will be hoping for more success in his first Super Featherweight title bout.
Chonlatarn hopes it's third time lucky as he faces Miguel Berchelt
(Image courtesy of Zanfer)