Joanne Calderwood has been forced out of her main event slot with Paige VanZant due to undisclosed reasons, and former women’s strawweight title challenger Rose Namajunas has stepped up on short notice to headline UFC Fight Night 81 in December.
VanZant’s teammate, Justin Buchholz, confirmed the news on Tuesday night’s Stud Show Radio.
Namajunas picked up her first promotional victory at UFC 192 earlier this month with an impressive first-round submission over Angela Hill. In her UFC debut, she took on Carla Esparza for the inaugural women’s 115-pound championship but lost the bout via submission.
VanZant is 3-0 in the UFC.