LAS VEGAS (AP) — Boxer Floyd Mayweather Jr. is due Friday to begin serving 90 days in a county jail in Las Vegas for his guilty plea in a domestic violence case involving an attack on his ex-girlfriend while two of their children watched in September 2010.

A judge last month ordered the undefeated 34-year-old prizefighter to turn himself in for a three-month sentence that Las Vegas police say could end up being about 60 days with good behavior and work time.

Mayweather’s lawyers, his promoter-manager, Leonard Ellerbe, and court and jail officials didn’t say Thursday what, if any, arrangements had been made for the surrender of the fighter who goes by the nickname “Money.” He has earned upwards of $20 million for his most recent fights against Victor Ortiz, which won him the WBC welterweight belt, and “Sugar” Shane Mosley.

Attorney Karen Winckler has said she was considering asking the judge who sentenced Mayweather to reconsider.

Jail time is expected to limit training for a possible Cinco de Mayo date for a fight in Las Vegas, where Mayweather’s promoters reserved a May 5 date at the MGM Grand Garden Arena for a possible fight against an as-yet unnamed opponent.

There has been no word from Mayweather’s either camp about any proposals for a long-awaited showdown between Mayweather and Manny Pacquiao, a champion fighter from the Philippines against whom Mayweather’s welterweight success is usually measured. The two men have a defamation lawsuit pending in Las Vegas federal court stemming from statements by Mayweather that he suspected Pacquiao was taking performance-enhancing drugs.

Mayweather pleaded guilty Dec. 21 to a reduced battery domestic violence charge and no contest to two harassment charges in a plea deal that saw prosecutors drop felony and misdemeanor charges that could have gotten Mayweather 34 years in state prison if he was convicted of all charges.

The case stemmed from a hair-pulling, punching and arm-twisting argument with Josie Harris, the mother of three of Mayweather’s children, and threats to beat their sons in an argument about Harris dating another man. Harris, now 31, lives in the Los Angeles area with the couple’s two sons, now 12 and 10, and a daughter age 8.