Invicta FC strawweight champion Carla Esparza has been forced out of her scheduled July 13 title defense against Ayaka Hamasaki due to a knee injury. MMAWeekly.com confirmed the news with Invicta FC president Shannon Knapp. It was first reported on Tuesday by MMAFighting.com . Esparza’s injury has caused a shake-up to the Invicta FC 6 fight card and could possibly lead to the crowning of an interim titleholder. Claudia Gadelha, who was originally scheduled to face Joanne Calderwood on the fight card, will now face Hamasaki. Invicta FC officials are waiting to learn how long Esparza’s injury will keep her sidelined before making a decision on whether Hamasaki vs. Gadelha will be for an interim title. The promotion is awaiting commission approval on a new opponent for Calderwood.