Boxing fans can kick off the Mayweather vs. Pacquiao madness with a weigh-in live stream.

Floyd Mayweather, Jr. and Manny Pacquiao will go head-to-head in the "Fight of the Century" on May 2, putting four different titles on the line as they do so. The pair will appear for their weigh-in on Friday at 6 p.m. ET, a precursor to their Saturday showdown at the MGM Grand Garden Arena in Las Vegas, Nev.

The weigh-in can be streamed for free via HBO.

While all attention is focused on the two welterweight superstars, Saturday will also see several other rivalries play out inside the ring. The undercard will feature Vasyl Lomachenko vs. Gamalier Rodrigues (featherweight), Leo Santa Cruz vs. Anthony Settoul (featherweight), Jesse Hart vs. Mike Jimenez (super middleweight), (Chris Pearson vs. Said El Harrak (junior middleweight), Andrew Tabiti vs. Brian Holstein (cruiserweight), and Brad Solomon vs. Adreian Granados (junio middleweight).

Find out more when Mayweather vs. Pacquiao airs Saturday at 9 p.m. ET.

Tags: boxing television sports