Floyd Mayweather Jr. might not be fighting Manny Pacquiao on May 5 at the MGM Grand, but he certainly will not be facing Robert Guerrero either, according to ESPN.com's Dan Rafael.

Rafael's Twitter feed read:

"Spoke to [Golden Boy CEO] Richard Schaefer about [Victor Ortiz]. I jokingly asked if he's working on Floyd-Guerrero deal. He said Mayweather WON'T be facing Guerrero."

Raymond Markarian of SweetScience.com cited a source close to the Mayweather camp who claimed that Mayweather and Guerrero were close to a deal. Guerrero and his people have been pushing very hard for a matchup with Mayweather.

This news means that Mayweather is probably down to two options for May 5—Mexican superstar Saul Alvarez, and Pacquiao. Some have also suggested that 154-pound titlist Miguel Cotto could be a possible foe.