By Ryan Burton
BoxingScene.com has been advised that Sebastian Sylvester (33-3, 16 KOs) is likely going to make a mandatory defense of his title against Roman Karmazin (40-3-1, 26 KOs) in St. Petersburg, Russia. Karmazin's promoter, Steve Bash of Bash Boxing, won the IBF's purse bid on Wednesday by putting down a heavy amount of $616,515. The amount was well above the bid of Sauerland Event, who put down $521,414. There is a 75-25 split in favor of the champion.
