Which sport has the most upsets?

by on January 7, 2006 at 8:06 am in Sports | Permalink

Soccer looks random to my untutored eye and perhaps it is:

Eli Ben-Naim, Sidney Redner and Federico Vazquez at the Los Alamos National Laboratory in New Mexico decided to look at unpredictability of results – how often a team with a worse record overcomes an apparently superior one – as the best measure of how exciting a league is. "If there are no upsets, then every game is predictable and hence boring," says Ben-Naim.

The team analysed results from more than 300,000 games over the last century from the US’s national hockey, football, baseball and basketball leagues and the top English football league. Rugby and cricket were omitted because they do not have a big following in the US.

Their results showed that the "upset frequency" was highest for soccer, followed by baseball, hockey, basketball and finally American football. But when they looked only at data from the past 10 years, the English football Premiership and baseball swapped places, which suggests that soccer might have become more predictable in recent years.

Here is the story.  I have long favored basketball.  In any given year, barring major trades or injuries, only three or four teams (if that) have any chance of winning the title.  You know who the titans are, and you know who the peons are.  Limiting randomness and divvying up the ponds in this fashion boosts suspense and status.  The old Celtics-Lakers match-ups were ideal.  The league is driven by star teams and players, so let’s promote those stars.  Chess has the same property, but a few good pitching nights can turn a World Series around.

The implied prediction is that basketball and football will have large bases of casually informed fans, typically relying on mass media.  Baseball and soccer will have more fanatics, more trivia contests, and will be more deeply rooted in niche media.  You have to know about many players and teams to figure out what is going on, who is likely to win, and why.

george January 7, 2006 at 8:46 am

Soccer is so low scoring that the results
of a match are less likely to reflect the
quality of the teams playing and more likely to
turn on a lucky shot or a momentary defensive
mistake.

KipEsquire January 7, 2006 at 10:08 am

The old quip about baseball seems analogous also: Every team wins one-third of their games and loses one-third. It’s the remaining one-third that makes all the difference.

It’s all about the sample size.

dsquared January 7, 2006 at 1:54 pm

Tyler, you missed a trick here; the clear implication is that all the regimes of draft picks, salary caps, etc etc that are used in the NBA and NFL to keep the sport interesting and the results equal, don’t actually work and these sports would be better off following the model of soccer which, AFAICT is the only major world sport to operate a genuinely free market in players.

AJE January 7, 2006 at 2:08 pm

“the clear implication is that all the regimes of draft picks, salary caps, etc etc … don’t actually work

This was the insinuation that I picked up on, and although I’m concentrating on soccer the link is below

http://thefilter.blogs.com/thefilter/2006/01/unintended_cons.html

Blar January 7, 2006 at 3:01 pm

Daniel, that implication isn’t clear at all. There are all sorts of differences between the NFL and the English premier league that could influence the number of upsets, with the difference in the sports played being the most obvious and probably also the most important. This study tells us very little about how the number of upsets in the NFL is influenced by its policies on the salary cap, draft, etc. It tells us even less about the other ways in which these policies are supposed to improve the league, like by creating more year-to-year variability in which teams are successful. I’m sure that there are some papers out there in the big ol’ literature on the economics of sport that are actually designed to assess the impact of these kinds of policies (like by comparing a league before and after it instituted a policy). If you want to argue that having fewer regulations would benefit the NFL (or the NBA), you really should be citing one of them.

GILES January 7, 2006 at 3:54 pm

The Law of Large number is the key – the low scoring rate in football means that lucky fluke scores gives underdogs their day.

But certainty of laws is probably important too:- soccer abounds in subjective judgements that can determine a match – from penalties to off side.

But comparing like with like, the best comparator is rugby union vs rugby league. The scoring rate is similar in both but the laws in Union are far more subjective and the results far more unpredictable.

I’m not an expert on yank sports but I’d hazard that Basketball has the most subjective rules and baseball the least. The fact that baseball is less predictable seems to me evidence that large numbers is the most important factor.

Zac Barry January 7, 2006 at 6:19 pm

The comment about not using the lines is halfway correct.

They are not trying to show to what frequency a team covered. They are just purely looking at upsets. For an upset the unfavored team must WIN.

Although the metric they used to decide who was “favored” should have been the vegas betting line. Record is a poor indicator of the favored team, for instance in basketball recently, teams in the East playing teams in the West may have a better record, but still not be favored.

Also with baseball and pitching, if a poor team has one ace pitcher, they may be favored on nights even when they play a team with a superior record.

I would have to say this flaw really makes any inferences that you can try to wring out of this pretty useless.

Steve Sailer January 8, 2006 at 3:24 am

It would be interesting to compare the two leading individual sports, golf and tennis.

I would guess that upsets are more common in golf than in tennis. For example, Tiger Woods record in the Ryder Cup match play between the US and Europe is only 7-11-2, although most of that is in doubles play rather than singles, where he is 3-1-1. The second best American of recent years, Phil Mickelson is 9-8-3. Davis Love III is 9-12-5. For the last decade or so, the Europeans have not had many true superstars, yet they’ve done very well against the higher ranked American players.

If you go farther back into the past, the top Americans have better records, such as Arnold Palmer’s 22-8-2 and Jack Nicklaus’s 17-8-3.

I think a couple of things are different between golf and tennis — the number of times the ball is touched is fewer in a round of golf than in a five set match, so there’s more randomness due to lower sample size. Also, the game of golf is played against the course, the game of tennis against your opponent. In tennis, the better player can overpower the lesser player, but not in golf, except metaphorically.

TechTrader January 9, 2006 at 12:26 pm

C’mon, this is yet another example of economists taking a decade to describe what is obvious to any informed current-day spectator.

OF COURSE football (soccer) has become more predictable — it’s become a game that is dominated by economics. Just as the NFL has super-market teams that can pay for superstars, so too has the European football leagues. Real Madrid, Chelsea, Bayern-Leverkusen are all leaders in their divisions for team revenue and player expense.

If an economist wanted to do an interesting analysis, then they should probably correlate the amount in revenue and/or player expense against this predictability function. I’d go further and say that looking at the income gap between top and bottom-ranked teams plus the increase in revenues league wide would determine when sports become predictable.

I mean seriously, it took a statistical study to figure this out? No wonder I never listen to economists…

Peter Shaw January 9, 2006 at 7:43 pm

Has anyone considered that football (American) and to a lesser extent basketball are contact sports.

Soccer is relatively low contact and baseball is obviously non-contact. Contact sports like football that place a high importance on strength and speed will not have many upsets as any disparity in pure atheltic ability eg speed, strength etc will be exploited.

I don’t know much about baseball but soccer clearly has the most upsets. Teams several levels below can and do beat much high ranked team (especially in the FA Cup):

http://www.abc.net.au/sport/content/200601/s1543765.htm

These results would be analagous to a college (or high school) team defeating an NFL team. Something that would never happen.

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