The work starts well in advance of a game. Malinsky, who says he worked for Walters on two occasions as a college football handicapper, says he routinely provided Walters quantified evaluations of teams, broken down by color codes and letter grades. Walters had similar arrangements with others who handicapped NFL, NBA and college basketball games.
The vast Walters network also includes a guy on the East Coast known as The Reader, who scans local newspapers, websites, blogs and Twitter for revealing tidbits or injury updates. That information is weighed and plugged into the computer alongside other statistical data -- from field conditions to intricate breakdowns of officiating crews. Armed with algorithms and probability theories, the objective is to find the mispriced team, then hammer the line to where Walters wants it.
"What Billy is also able to do is handicap the handicappers," says Malinsky, now the editor-in-chief of news for Pregame.com, a Vegas-based website selling handicapping information. "So after a while he knows what this type of game from this guy is worth. He will just absorb the information and then make the final decision. He is the coach calling the plays."
Asked about Malinsky's descriptions, Walters says, "He has no clue how my operation runs. Unfortunately, David wasn't successful in what he did, and I discontinued the relationship."
Rubalcada, in his position as a runner, didn't know the details of how any bets came together. Rubalcada says he made his way into Walters' world booking tee times at Royal Links Golf Club, a pricey course Walters owns a few miles off the Strip. Rubalcada says he advanced to a job best described as course hustler, setting up on a par-3 hole with his pitching wedge and offering foursomes the chance to wager on who would make it closest to the pin.
When Walters' gambling operation offered him a job, Rubalcada saw a chance to make huge money. Eventually, he began mimicking some of Walters' betting action with his own funds, relying on an inside source to text whether Walters' bets were real or phony moves. It didn't always work, and Rubalcada dug himself a hole so deep that he began embezzling from his Walters-funded account, taking a total of $482,833. He added to his troubles when he attempted to cover the theft by staging a carjacking, which was captured on hotel video surveillance.
Rubalcada eventually pleaded guilty to two felony theft counts and last March was sentenced to three years' probation and ordered to make restitution of $364,634. "I'll be dead before they get that money back," he says. In the fall, his legal woes escalated when he was jailed for violating the terms of his probation, which included random drug testing and prohibitions on alcohol use and gambling. Rubalcada, who drank heavily during two ESPN interviews, remains in jail awaiting a spot at a drug treatment facility.
After Rubalcada was arrested, one of Walters' attorneys visited the county prosecutor's office -- without prodding -- armed with records detailing how the gambling operation was set up legitimately through a limited liability corporation. The move surprised and impressed authorities, as did the fact that a former Vegas detective was overseeing the group's security arm. "They had one of the biggest law firms in the city set up their entire corporation and their books," says Brian Rutledge, Clark County's chief deputy district attorney. "It was scrupulously set up to be in compliance with all the gaming regulations. They were better set up legally than your average business, let's put it that way."
EVEN THE GREATEST gambler of all time doesn't always win -- but he doesn't have to. In the sports gambling world, where the house takes a 10 percent cut, bettors need to win 52.38 percent of their games to break even. Any additional wins represent pure profit -- and when hundreds of thousands of dollars are wagered on a single game, lots of it.
"The average guy on the street might be disillusioned if he knew the actual winning percentage," Malinsky says of Walters' consistent but seemingly modest success against the line. "What people don't understand is that the difference between winning 53 percent and 55 percent is like swimming the Atlantic Ocean."
Walters gets those extra 2 percentage points and sometimes much more. He has boasted that he has suffered only one losing season in 39 years, and past criminal investigations provide a snapshot of his success. The 1985 raid against the Computer Group revealed that the syndicate won an eye-popping 60.3 percent of its college football picks one season. More recently, an unsuccessful money-laundering case in 2002 found that Walters was consistently winning as much as 58 percent a week, sources told ESPN. This year, Walters says, he expects to break even. "Quite frankly, this may be my last year," he says. "I may not do this anymore."
Another myth about professional gambling is that every big bet is made in Vegas. Placing bets outside Nevada is a legal gray area and, as a result, a subject on which those close to Walters refuse to shed much light. But multiple sources estimate that only a small fraction of Walters' bets are actually placed there. The remainder, they say, happen either at offshore gambling sites or, to a lesser extent, through a network of bookies, many of whom have had relationships with Walters for decades.
Sources say Walters' operation has become more active in offshore sportsbooks, in Europe and in the emerging Asian market. A 1996 raid on Walters' office found more than 40 telephones, from which authorities said more than 12,000 long-distance calls a month were placed to illegal bookmakers in the U.S., Canada, Central America and the Caribbean. Additionally, documents detail a wire transfer of $970,000 -- suspected by authorities at the time of being "illegal gaming winnings" -- into Walters' Las Vegas bank account through banks in Montreal, London and New York. Walters was indicted three times for money laundering in connection with the investigation, but the charges were dropped before trial.
Today, sources say, the headquarters of Walters' international operation is located outside the United States. The last known location was in Panama, according to sources, after earlier offices were based in London, the Bahamas and Tijuana, Mexico. "Very little happens here," one source familiar with Walters' operation says of the group's Vegas-based gambling.
FEW PEOPLE HAVE experienced the many facets of Walters' personality as intimately as John Mastronardo, a convicted gambler and the younger brother of one of the country's biggest bookies. Mastronardo, who says he worked for Walters from 2000 to 2005, calls his former boss a genius. But he also witnessed what he saw as a dark side -- Walters could be cunning and openly malicious, he says.
Mastronardo, who has also dabbled as a bookie and worked in the Caribbean as an offshore sportsbook operator, says he and 20 or so underlings moved bets for Walters from Philadelphia before he moved to Las Vegas to work out of Walters' headquarters in exchange for a 25 percent cut of the winnings. "At times, he would give me $1 million to hold, $2 million to hold, with no signed contract," Mastronardo says. "I was betting it for him, so he staked me a bankroll.