Gafencu is the first fighter to become a two-division Colosseum Tournament champion, holding titles in two weight classes simultaneously.
As of 18 August 2020, he is the #14 ranked welterweight in the world, according to the International Professional Combat Council (IPCC).
Gafencu faced Adrian Cibu on September 17, 2018, in the semi-final of the Super Welterweight Tournament.
Gafencu faced Leonard Dorin's student Adelin Mihăilă at Colosseum Tournament 8 in the finals.
[6] Gafencu faced the Fight Institute by Peter Aerts's Thomas Doeve on March 29, 2019, at Colosseum Tournament 11.
He won the fight via knockout in the second round, becoming the first Colosseum Tournament fighter to win titles in two weight classes.
[19] In his return bout, Gafencu was expected to face Adelin Mihăilă in rematch on October 23, 2020, at Colosseum Tournament 20.
However on October 6, it was announced that Mihăilă pulled out due to his COVID-19 recovery, and he was replaced by Alexandru Ianţoc.
[24] In 2019, Gafencu earned public praise from Romanian legend Daniel Ghiță for his ring performances.