Kyle Terada-USA TODAY Sports

UFC on Fox 10's preliminary card is starting to become a bit more interesting with news breaking that a bantamweight tilt between Sergio Pettis and Alex Caceres has been added to the already big card. Gary D'Amoto from the Milwaukee Journal-Sentinel reported the story out on Twitter:

Sergio "The Phenom" Pettis of Milwaukee has reached a verbal agreement to fight Alex Caceres on the UFC on Fox 10 card Jan. 25 in Chicago. — Gary D'Amato (@garydamatogolf) December 18, 2013

Sergio Pettis, brother to UFC lightweight champion Anthony Pettis, was regarded as one of the hottest prospects in the flyweight division. He made his UFC debut at UFC 167 as a bantamweight opposite UFC and WEC veteran Will Campuzano and took a hard-fought but decisive unanimous decision victory.

While there was some speculation regarding whether he would remain a part of the UFC's bantamweight division or drop back to flyweight, it appears the 20-year-old is content at 135 pounds.

Alex Caceres, meanwhile, has flown under many radars. The TUF 12 heel began his UFC career with back-to-back losses, but has been on fire as a bantamweight. He currently owns a 4-1, 1 NC record in the UFC as a bantamweight, but could very easily be 6-0 (a harsh two-point penalty against Edwin Figueroa and failed drug test contributed to the loss and no contest on his record).

Caceres was slated to face Mitch Gagnon at UFC Fight Night 33, however, visa issues prevented Gagnon from being able to enter Australia and the bout was scuttled.

UFC on Fox 10 takes place on January 25, 2014, and is headlined by Benson Henderson vs. Josh Thomson. Pettis vs. Caceres is the 12th fight on the card and likely represents the final bout to be added.