LAS VEGAS -- Floyd Mayweather Jr. may be one of the richest prizefighters ever.

But the unbeaten five-division champion who goes by the nickname "Money" is about to trade life in a posh five-bedroom Las Vegas home for almost three months in a cell about one-third the size of a small boxing ring.

Mayweather is scheduled to surrender Friday before a Las Vegas judge who sentenced him for his guilty plea to reduced domestic battery charges in a hair-pulling, arm-twisting attack in September 2010 on the mother of three of his children.

Mayweather's legal and ring advisers didn't respond to messages Thursday about his scheduled Friday morning surrender before Las Vegas Justice of the Peace Melissa Saragosa.

As a high-profile inmate, police say Mayweather, 35, probably will serve most of his time in a small solo cell. There is floor space for sit-ups and push-ups. But Mayweather's stint in the high-rise Clark County Detention Center is expected to limit his ability to train for another fight.

At least for the first week, Mayweather will be segregated for his protection from the other 3,200 inmates in the downtown Las Vegas facility, police Officer Bill Cassell said this week.

Mayweather won't have a TV in his cell, and Cassell said televisions in jail dining areas probably won't carry the June 9 pay-per-view WBO welterweight fight between Mayweather rival Manny Pacquiao and Timothy Bradley at the MGM Grand Garden arena.

Mayweather's lawyers, Karen Winckler and Richard Wright, have said they didn't plan to seek another postponement or delay.

The judge sentenced Mayweather on Dec. 22, then later allowed him to remain free long enough to fight Miguel Cotto on May 5 in Las Vegas.

Mayweather was accompanied into the ring by entertainers Justin Bieber and 50 Cent before winning the Cinco de Mayo weekend bout and a guaranteed $32 million. Cotto was paid $8 million.

Saragosa said when she sentenced Mayweather that she was particularly troubled that he threatened and hit ex-girlfriend Josie Harris while their two sons watched. The boys were 10 and 8 at the time. The older boy ran out a back door to fetch a security guard in the gated community.

However, the judge accepted the deal that had Mayweather plead guilty to misdemeanor domestic battery and no contest to two harassment charges. Prosecutors dropped felony and misdemeanor charges that could have gotten Mayweather 34 years in prison if he had been convicted on all counts.

Mayweather's jail stay will be capped at 87 days, because the judge gave him credit for three days previously served. It could be reduced by several weeks for good behavior, Cassell said Thursday.

Mayweather also was ordered to complete a yearlong domestic violence counseling program, 100 hours of community service and pay a $2,500 fine.

Harris and the three children now live in Southern California. Her lawyer, Charles Kelly, declined to comment Thursday.

Mayweather will be housed in a standard administrative segregation cell no larger than 7-by-12 feet, with a bunk, stainless steel toilet and sink, a steel and wood desk with a permanently bolted stool and two small vertical windows with opaque safety glass.

The cell will be a far cry from Mayweather's nearly 12,800-square-foot, two-story mansion on a cul de sac in an exclusive guarded community several miles south of the Las Vegas Strip. Mayweather's home has two garages, five bedrooms, eight bathrooms, and a swimming pool and hot tub overlooking a golf course.

Mayweather could have about an hour a day out of his cell with access to an exercise yard, Cassell said. Depending on his behavior, the boxer could later get several hours a day for exercise with other inmates also being held in protective custody.

He'll get a standard-issue blue jail jumpsuit with the letters CCDC and orange slippers.

Mayweather will be able to deposit money into a jail account to purchase snacks, soap and personal hygiene items from the jail commissary.

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  • Mayweather vs. Apodaca - October 11, 1996 (Professional Debut)

    Olympic medalist Floyd Mayweather of Grand Rapids, Mich., right, lands a right to the face of Roberto Apodaca of El Centro, Calif., during their super featherweight fight at Texas Station in Las Vegas. Mayweather scored a knockout at 37 seconds of the second round. (AP Photo/Lennox McLendon)

  • Mayweather vs. Gerena - September 11, 1999

    Carlos Gerena, left, of Puerto Rico mixes it up with Floyd Mayweather Jr. of Grand Rapids, Mich., during the WBC super featherweight title fight in Las Vegas. Mayweather retained his title when referee Richard Steele, on advice of a ringside physician, stopped the fight after the seventh round. (AP Photo/Lori Cain)

  • Mayweather vs. Corrales - January 20, 2001

    Floyd Mayweather, left, of Grand Rapids, Mich., stands in the ring with his father, Floyd Mayweather Sr., after defeating Diego Corrales of Sacramento, Calif., in their WBC super featherweight championship fight in Las Vegas. Prior to the bout, both Mayweather and Corrales were undefeated. (AP Photo/Eric Risberg)

  • Mayweather vs. Castillo II - December 7, 2002 (Rematch)

    Floyd Mayweather lands a left to Jose Luis Castillo of Mexico during their WBC lightweight fight at Mandalay Bay Resort in Las Vegas. Due to the closeness of their first bout, Mayweather accepted a rematch, citing the rotator cuff injury to his left shoulder -- which he sustained during training two days before the original match -- as a hindrance the first time. (AP Photo/Laura Rauch)

  • Mayweather vs. Gatti - June 25, 2005

    Floyd Mayweather Jr., right, of Las Vegas, Nev., hits Arturo Gatti of Jersey City, N. J. in second round action of their WBO world super lightweight championship bout at Atlantic City's Boardwalk Hall. Gatti's corner stopped the fight after round six, giving Mayweather his third world title. (AP Photo/Mel Evans)

  • Mayweather vs. De La Hoya - May 5, 2007

    Floyd Mayweather Jr., right, throws a right at Oscar De La Hoya, during the fifth round of their WBC super welterweight world championship boxing match at the MGM Grand Garden Arena in Las Vegas. The Mayweather-De La Hoya bout set the record for most PPV buys for a boxing match with 2.7 million households, shattering the record of 1.95 million for Evander Holyfield-Mike Tyson II. (AP Photo/Eric Jamison)

  • Mayweather vs. Hatton - December 8, 2007 (Retirement)

    Mayweather celebrates after defeating Hatton in the WBC welterweight boxing title fight at the MGM Grand hotel-casino in Las Vegas. Mayweather congratulated Hatton afterward, calling him the most difficult fighter he'd faced. Shortly after, Mayweather announced his retirement and expressed his interest in becoming a promoter. (AP Photo/Isaac Brekken)

  • Mayweather vs. Márquez - Sept. 19, 2009 (Comeback)

    Floyd Mayweather Jr., right, and Juan Manuel Marquez, of Mexico, during their non-title welterweight fight in Las Vegas. On May 2, 2009, it was confirmed that Mayweather was coming out of a 21-month retirement to fight <em>The Ring</em> Lightweight Champion Juan Manuel Márquez. The fight marked only the fifth time in boxing history that a non-heavyweight fight sold more than 1 million pay-per-views, with the official HBO numbers coming in at over 1 million buys; and equalling a total of approximately $52 million. (AP Photo/Rick Bowmer)

  • Mayweather vs. Ortiz - September 17, 2011 (Larry Merchant Incident)

    Floyd Mayweather delivered a controversial knockout punch to Victor Ortiz during the fourth round of the WBC welterweight title fight in Las Vegas. Although Mayweather's victory was generally accepted as legal, it was also labelled as unsportsmanlike, as Larry Merchant reminds him after the match. Mayweather responded with a barrage of disrespectful comments before exiting the ring.

  • Mayweather vs. Cotto - May 5, 2012

    Boxers Floyd Mayweather, left, and Miguel Cotto face-off during a news conference in New York, Tuesday, Feb. 28, 2012. Cotto and Mayweather will fight in Las Vegas on May 5, 2012 for Cotto's WBA World super welterweight title. (AP Photo/Seth Wenig).