Fighting in Krasnodar, Russia against Aik Shakhnazaryan, Corley was comprehensively beaten over the ten round distance at Olimp.
Scores were wide on the cards 100-90, 99-92 and 98-92 as the home fighter improved to 22-2, 11 KOs.
Corley is scheduled to be back in the ring as early as next month in a rematch opposite another veteran ex-world ruler in Vivian Harris, having beaten the one-time super-lightweight champion in 2017.
Furthermore, the 44 year-old is then pencilled in to fight at Garfield Park on August 11.
At this rate, Corley could end up hitting a century of fights before his retirement having already participated in 82 bouts.