Why is the NBA getting a pass in Donaghy, referee scandal?
http://sportsillustrated.cnn.com/2009/w ... index.html
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Why is the NBA getting a pass in Donaghy, referee scandal?
closg00 wrote:Why is the NBA getting a pass in Donaghy, referee scandal?
http://sportsillustrated.cnn.com/2009/w ... index.html
closg00 wrote:Why is the NBA getting a pass in Donaghy, referee scandal?
http://sportsillustrated.cnn.com/2009/w ... index.html
One can dig into each and every game -- Javie refereed Iverson just 14 times while Donaghy was betting. And you know what? Iverson's teams did just about average, compared to the betting line. On November 26, 2003, when the Pistons were in Philadelphia, the Sixers were favored by one point, but won by four. So, Donaghy's rule would have lost you money that night. Javie was on the court when Iverson's Sixers played in Seattle on December 28, 2004. The Sonics were eight point favorites, but won by just seven. If he had followed his own advice, Donaghy would have lost money that night. Javie refereed when Iverson's Sixers killed the Nets, 116-96, on April 12, 2006.
All together, in the period in question, Iverson's teams beat the spread six times, and failed to beat it seven times when Javie was refereeing. Once, there was a "push" (in 2005, when the Spurs were nine point favorites, and beat the Sixers 100-91).
Win or lose, gamblers typically pay a 10 percent vig. Basically, to win $100, you have to bet $110. If someone had bet $110 on Iverson's opponents to beat the spread in each of the 14 Javie games, they would have won $700, lost $660, (and had no money change hands on the "push" game). Do the math there, and you'll see that this betting strategy would have left you with a measly $40 profit, on $1540 gambled.
Wayne Winston is a professor at Indiana University's Kelley School of Business, the author of the book "Mathletics" which explains intricate methods of using math to assess sports, including referee bias. In the nine years he worked for the Dallas Mavericks, Winston built a sophisticated database of NBA game information. Winston used his own methods to check into Donaghy's claim about Javie and Iverson. He looked into how Iverson's Sixers teams performed compared to expectations when Javie refereed, and similarly found nothing to confirm Donaghy's assertion. "I computed forecasts based on Sagarin ratings for each game Javie officiated against the 76ers from 2002-2006," he reports, "and found zero evidence that Javie unfavorably impacted 76ers performance in those games."
Betting against Iverson's team in Crawford games would have been lucrative. But Donaghy recommended betting for Iverson's team to beat the spread in these games. Let's pretend Donaghy bet $110 on Iverson's team to beat the spread in every Crawford game. Donaghy would have paid $990 for the nine losers, and won $500 on the winners, meaning he would have lost $490.
Of course, you'd be far better off just picking winners at random.
For what it's worth, there's little evidence Iverson was getting any favors in these games, as his free throw rate in Crawford games was 7.9 per 36 minutes -- the same as his career average.
But what about a referee and a coach being friends? Isn't that the kind of thing that turns your stomach as a fan? Did Fratello's Grizzlies tend to do well when Forte was on the floor, as Donaghy implies?
Hardly.
Forte refereed 13 games while Fratello was coaching the Grizzlies (all fall during the period when Donaghy was betting). They beat the spread in just six of those 13 games, falling short seven times. According to BYU economist Joe Price's database, when you factor in the final scoring margin in those games -- a more refined measure of a team's performance -- Fratello's Grizzlies did not happen to do well in those 13 games.
Confronted with all of that data at a Tampa hotel on Monday morning, Donaghy had no explanation, other than to say that his betting techniques were more subtle than simply betting on these rules, and that he did not bet on every game that met the description.
"These are some of the criteria that I used," Donaghy says. "I'm not saying I bet every game. ... You can spin the stats any way you want ... The FBI investigated thoroughly. ... To sit here and say there was a science to how I did this, with the stats you're throwing at me. ... Based on the information you're using, with your equation, it's not even in the same ballpark. There were other factors that came into play. Inside information about injuries. Home game or away game. Home crowd. Many more factors to take into consideration."
dsaqqq wrote:By looking at any individual factor in isolation, the effect of other factors could easily mask an effect by the factor at issue. The validity of the results in the article here depends on the classic "all else equal" assumption in a situation where all else is probably not equal.
Krizko Zero wrote:Just as stats do not nearly tell the whole story when it comes to game play, the same can be said for this situation. Anyone who watches an NBA game knows that a game can be called 100% legitimately throughout the entire game, until that one moment where a call could be purposely blown and shift the entire outcome by changing the flow.
Mentally weak teams like the Wizards, for example, are immensely more vulnerable to something like this because they are not going to "fight through it" or stop dealing with the refs and just play the game. Stats will never tell the whole story here.
Here is a quote from a response to the ESPN article that addresses using this method of discounting Donaghy:dsaqqq wrote:By looking at any individual factor in isolation, the effect of other factors could easily mask an effect by the factor at issue. The validity of the results in the article here depends on the classic "all else equal" assumption in a situation where all else is probably not equal.
Personal Foul" has dozens of interesting claims. A good portion of these claims are nearly impossible to verify. But there are some exceptions.
BOSTON -- Only two people know all the details of the NBA's 2008 betting scandal: former NBA referee Tim Donaghy and his associate, former professional gambler Jimmy "The Sheep" Battista. Both men served time in federal prison for their roles in the gambling scheme.
A source close to Battista who says the gambler explained to him the details of the betting operation tells 7Sports that Battista says he was working with 13 referees and not just Donaghy, as the NBA has claimed.
The source says Battista showed him what the gambler claims are phone records and game notes confirming the names of all 13 referees involved.
The source also tells 7Sports that Battista claimed to have a "Big 5" of "dependable" referees and that Donaghy was the "King,” delivering a winning bet in 78 percent of the games he officiated.
The validity of the results in the article here depends on the classic "all else equal" assumption in a situation where all else is probably not equal.
Excerpt from Donaghy's book wrote:Studying under Dick Bavetta for 13 years was like pursuing a graduate degree in advanced game manipulation. He knew how to marshal the tempo and tone of a game better than any referee in the league, by far. He also knew how to take subtle — and not so subtle — cues from the NBA front office and extend a playoff series or, worse yet, change the complexion of that series.
fishercob wrote:Define flow and tone.
Krizko Zero wrote:For an NBA fan to not understand what the "flow" of the game entails, I'm not sure I can help with that, but it also is clear that In Stern You Trust. It's not my place to convince you otherwise, I'd prefer if I actually still believed the game was fair.