Efe Ajagba said he was confident of victory, after knocking out Romanian heavyweight prospect, Razvan Cojanu, in the ninth round of their fight on Sunday.

It meant Ajagba went on a 13-match unbeaten run.

Ajagba had knocked down huge underdog Cojanu twice before their scheduled 10-rounder was stopped at 2:46 of the ninth round on the Adam Kownacki-Robert Helenius undercard at Barclays Center in Brooklyn.

The loss was Cojanu’s seventh of his professional career (17-7, 9 KOs).

The knocked out is the fourth of his professional career in nine years.

Each of his first three knockout defeats – to Donovan Dennis, Luis Ortiz, and Daniel Dubois – occurred in the second round.