Manny Pacquiao' s fight with Brandon Rios was held on November 24, 2013, in Macau (Saturday evening, November 23, 2013, in U.S. timezones.

Yours truly watched it via livestream powered by PLDT Fiber at The Essensa BGC.
On Tuesday November 19 Filipino Boxer Manny Pacquiao invited Jessica Sanchez to sing the Philippine National Anthem via the social media platform twitter
Even it was a late notice, Jessica still accepted the offer.
The American idol sang the anthem in a very smooth and natural manner. No birit and safe to say that she was able to execute it the proper way.
Jessica also sang the United States of America National Anthem which impressed the whole crowd of Macau.
On Twitter
Manny Pacquaio: “Jessica, would you do me the honor of singing the national anthems before our fight?”
Jessica Sanchez: Yes! I'm honored!
Their twitter conversation was a hot online topic and news companies started getting statements from Jessica.
Jessica Sanchez is the first runner-up in the 2012 edition of "American Idol,"
She sang the American national anthem during Pacquiao’s June 2012 fight against Timothy Bradley Jr., which Pacquiao lost.
Christian Bautista missed a few lines while singing the Philippine national anthem (Lupang Hinirang) at an exhibition match between reigning world bantamweight champion Gerry PeƱalosa and NABF bantamweight champion Bernabe Concepcion at Metropolis Mall in Alabang.
Jessica sang much, much better than Martin Nievera and Christian Bautista