Internet buzz made Robert "The Ghost" Guerrero of Gilroy the lone candidate for the big money opponent slot against Floyd Mayweather Jr. on May 4 in Las Vegas.

But Mayweather stepped forward to clarify that a Guerrero bout is not as much of a done deal as has been reported.

"As of right now I don't know who I'm fighting on May 4th. Me fighting Robert Guerrero is just a rumor," Mayweather posted on his Facebook account Wednesday.

Minutes later, Golden Boy Promotions CEO Richard Schaefer said Mayweather's opponent had been selected and that an announcement would be made as soon as all of the contractual formalities had been signed.

Guerrero remains the front-runner.

Colleges

Cal football coach Sonny Dykes announced the completion of his staff with the hiring of Garret Chachere (defensive ends) and Zach Yenser (offensive line). Chachere was at Southern Miss in 2012, while Yenser had been on Dykes' staff at Louisiana Tech.

  • Three midyear enrollees -- kicker Matt Anderson (San Ramon Valley High), quarterback Jared Goff (Marin Catholic High-Kentfield) and receiver Drake Whitehurst (City College of San Francisco) -- officially joined Cal's football program when spring semester classes began Tuesday.

  • San Jose State defensive end Travis Johnson was added to the Senior Bowl roster, joining Spartans tight end Ryan Otten and offensive tackle David Quessenberry at Saturday's game in Mobile, Ala. (1 p.m., NFL Network).


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    Figure skating

    Vincent Zhou of Palo Alto won the junior men's title at the 2013 U.S. championships in Omaha, Neb., earning the second highest score in competition history for a junior man Tuesday. The 12-year-old skated to music from "Casablanca" as choreographed by East Bay coach Justin Dillon. San Jose's Polina Edmunds won the junior ladies title Wednesday, while Fremont's Karen Chen was fourth.

    Staff writer Elliott Almond contributed to this report.