Oliver Zaren losses
Over 7 years as a professional, Oliver Zaren has compiled a 19-1-1 (8) record, including three title fights across four weight classes. His only loss came in a title fight against Osleys Iglesias.
1. Oliver Zaren loses to Osleys Iglesias via KO
On October 8, 2026 Oliver Zaren fought Osleys Iglesias for the IBF and IBO super middleweight titles. Zaren was 26 years old with a record of 19-0-1, and Iglesias was 28 with a record of 15-0. Iglesias was on an undefeated 15-fight winning streak. Iglesias stopped Zaren via TKO in the 7th round. Failed to capture the title.