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