Join us tonight for round-by-round coverage and scoring of the Shane Mosley/Luis Collazo and Juan Lazcano/Vivian Harris fights, starting at 9:45 ET on HBO. We'll see how Shane looks in what -- as Matt and myself have both said -- most see as a tune-up for a possible Floyd Mayweather, Jr., fight, and we'll also see how Collazo looks against an elite fighter. Plus, that Lazcano/Harris fight is nothing to sleep on.

MAIN EVENT
SHANE MOSLEY
(43-4, 37 KO, Pomona, CA)
versus
LUIS COLLAZO
(27-2, 13 KO, Brooklyn, NY)
WBC LIGHT WELTERWEIGHT ELIMINATOR
VIVIAN HARRIS
(27-2-1, 18 KO, Brooklyn, NY by way of Georgetown, Guyana)
versus
JUAN LAZCANO
(37-3-1, 27 KO, El Paso, TX)
LIVE from Mandalay Bay in Las Vegas, NV on HBO