The Briton was dropped three times on the canvas before he was finally defeated by technical knockout in six rounds.
Berchelt confirmed his status as a future opponent to the full champion, Puerto Rican Roman “Rocky” Martinez and fought with intelligence to see out the victory.
Jupp displayed fast hands and could connect in the first two rounds to the head and even the body, but failed to make a dent sufficiently to take the interim title.
The problems started for Jupp from the third when he began to be cornered by the Mexican, who used combinations to the head and body to put him down.
By the fourth, Berchelt forced Jupp to put one knee on the canvas and forced referee Mark Nelson to begin taking a closer look.
In the sixth and following another combination, Jupp was put back on the canvas and in poor condition Jupp – forcing his corner and the official to act.
‘I Am very happy and satisfied. As a child I dreamed of reality. With my dedication and discipline to this great sport I did it and I thank God, my family, friends, my manager Mario Abraham my promoter Fernando Beltran and my team. The hard work begins now to continue my reign.” said Berchelt.