World Series of Fighting 24: Fitch vs. Okami was a mixed martial arts event held on October 17, 2015. in Mashantucket, Connecticut, United States. The event featured two championship title bouts, flyweight and bantamweight.
The main event was a welterweight fight between UFC veterans, Jon Fitch and Yushin Okami. The co-main event was a fight for the WSOF Heavyweight title between champion Blagoy Ivanov and challenger Derrick Mehmen, this was Ivanov’s first title defense. The first fight to open the main card was also a title bout for the vacant flyweight belt between Magomed Bibulatov and Donawon Frelow.