Invicta FC is shuffling the deck just four days out of its next event.

The MMA debut of popular female boxer Heather Hardy is now off due to an injury to her opponent Brieta Carpenter, MMA Fighting confirmed Tuesday night with Invicta officials. In its place at Invicta FC 21 on Saturday will be a featherweight bout between UFC veteran Elizabeth Phillips and Leah Letson. The fights take place in Kansas City.

Phillips (5-4) last competed in a unanimous loss to Raquel Pennington at UFC 202 in August. The Sikjitsu product, who trains with the likes of Julianna Peña and Michael Chiesa, went 1-3 during her UFC run. Phillips, 30, owns a win over Jessamyn Duke.

Letson (3-1) has won three straight and is coming off a first-round TKO of Sarah Payant at Premier FC 20 in July. The 24-year-old Wisconsin native has also competed for King of the Cage.

Hardy, 34, was going to make her first foray into MMA on the card after training the last few months at Renzo Gracie Academy. The Brooklyn native is 18-0 in boxing and her next bout in the ring is March 4 at Barclays Center.

In the Invicta 21 co-main event, Raquel Pa’aluhi will take on Pannie Kanziad in a bantamweight bout.