Duda Santana needs a new opponent.

MMA Fighting confirmed with sources that Leah Letson is out of her bantamweight bout with Santana (3-1) at UFC Sao Paulo on Nov. 16. Letson’s reason for withdrawing from the bout was undisclosed.

An earlier version of this report stated that Amanda Lemos (who was returning from a two-year USADA suspension after testing positive for a steroid in November 2017) had agreed to replace Letson, but MMA Fighting is now being told that Lemos’s plans are to return to the 115-pound division. She made her UFC debut in July 2017 as a late-notice bantamweight replacement against Leslie Smith.

A teammate of light heavyweight title contender Thiago “Marreta” Santos, Santana made her first UFC appearance this past June at a show in Stockholm where she was submitted by Bea Malecki. Santana, 23, was signed after Visa issues prevented her from competing on the Brazilian edition of Dana White’s Contender Series.

UFC Sao Paulo takes place at Ibirapuera Gymnasium in Sao Paulo, Brazil. In the main event, Jan Blachowicz fights Ronaldo Souza in a light heavyweight bout. The main card will air live on the ESPN+ streaming service.