An undisclosed injury has forced a change to Invicta FC 33.

Kay Hansen will fight Sharon Jacobson in the strawweight fight on Dec. 15, replacing an injured Kanako Murata, the company reported on Thursday.

Just 19, Hansen, of Whittier, Calif. has already put together a 3-2 pro MMA record. All three of her victories have come by way of finish. In her most recent fight, Hansen dropped a majority decision in a hard-fought bout against Erin Critchfield at Invicta 32.

Jacobson, meanwhile, boasts a 5-3 pro mark. The Colorado Springs native is 3-1 in Invicta, but she comes off a loss in her most recent bout, a unanimous decision to Emi Fujino at Pancrase 296 in May.

Invicta FC 33 in Kansas City will be headlined by an atomweight title fight between Jinh Yu Frey(7-3) and Minna Grusander (6-2).