After a brief stop at 135 pounds, Sergio Pettis will return to the flyweight division for a clash with Alex Perez at UFC Mexico City.
The promotion announced the bout during the UFC 240 broadcast on Saturday night. Two other bouts were also confirmed for the Sept. 21 card: Marion Reneau vs. Irene Aldana at bantamweight and Paul Craig vs. Vinicius Moreira at light heavyweight.
UFC Fight Night 159 takes place at Mexico City Arena in Mexico City on Sept. 21 and is headlined by a featherweight tilt pitting Yair Rodriguez against Jeremy Stephens.