Could we see an upset? Or will underdogs Michael Katsidis (fighting Juan Manuel Marquez) and Freddy Hernandez (fighting Andre Berto) fight to form, and succumb to the favorites in Las Vegas tonight?

Katsidis, we think, could possibly be the spoiler for Marquez, who is angling for a third scrap with Manny Pacquiao. Marquez (51-5-1) is 37, and some have seen slippage in his last three outings (wins over Juan Diaz, sandwiched by an out of his weight class loss to Floyd Mayweather). The 30-year-old Katsidis (27-2) might just be poised to get the signature win of his career, especially if hes extra motivated with the loss of his older brother, Stathi, who committed suicide on October 19 in Australia.

Andre Berto should have no problems upping his mark to 27-0, as the Mexican Hernandez, while 29-1, is not in the same league as the Floridian.

See for yourself on HBO, which kicks off at 9:45 Eastern, and feel free to drop a prediction here.