Caio Borralho wonders if UFC middleweight champion Dricus du Plessis and contender Khamzat Chimaev are dealing with issues ahead of UFC 319, and that’s why the promotion called him to be the backup fighter for Saturday’s main event.

Imavov (16-4 MMA, 8-2 UFC) meets Borralho (17-1 MMA, 7-0 UFC) in the UFC Fight Night 258 main event on Sept. 6 from Accor Arena in Paris. Borralho will weigh in as the official backup for Du Plessis' title defense against Khamzat Chimaev in Saturday's UFC 319 (pay-per-view, ESPN, ESPN+) headliner at United Center in Chicago.

UFC middleweight champion Dricus du Plessis and undefeated contender Khamzat Chimaev are days away from battling in the UFC 319 main event in Chicago. In one of the biggest fights of the year, Du Plessis will put his belt on the line against arguably the toughest challenge of his title reign.