Sunday, February 1, 2009

The Curious Case of The Chicago Cubs World Series Drought

Every baseball fan, and a lot of people who aren't, know the Chicago Cubs haven't won the World Series in a really, really, really long time. The Cubs' play-off flame-out last fall made it a nice round 100 seasons since their last title in 1908. Clearly, this is a signifier of some level of ineptitude over the years. The chances of winning the World Series in any given year are pretty small though. Maybe there is something more than ineptitude at play here; like bad luck.

What are the chances that any team, given a fair chance every year, would not win the series in 100 years? Well, let's play it out. In 1908, there were sixteen major league teams, which logically are the only teams eligible to go 100 seasons without a title. I simulated each season, starting with 1909. And by simulated, I mean a winner was randomly chosen, remember every team has a fair and equal chance to win. This fair and equal chance to win gets smaller as the years go on however. Subsequent expansions to 18, 20, 24, 26, 28 and 30 teams and the resulting increased competition are factored for. Then after all 100 seasons are simulated, titles are counted up for each team. Repeat 250,000 times or so and then sum the number of occurrences when a team went without a World Series title. As it turns out, the average is a hair over .08 teams that fail to win a Series in the 100 seasons. Or, if we repeated the last 100 years, there is about 1 chance in 12 that any team would match the Cubs' feat.

Clearly, considering every teams' Series chances equal is a huge simplification of what's actually happening. There have been several factors that indicate that it is not a level playing field. The overwhelming success of the New York Yankees (26 titles) definitely indicates that certain teams have some sustained competitive advantage. And more recently, the unbalanced realignment of the American and National Leagues as well as the Cubs' Central Division has further shifted the probability of winning for certain teams. I repeated the above process but this time applying a varied, linear relationship to each teams probability of winning. In other words, the worst team was given (X-A)% chance of winning while the best team was given (X+A)% chance of winning with similar adjustments for the middle of the pack.

-click graph for larger view-

In this model, the worst team is assumed to be one of the original sixteen and the worst team is assumed to be the same year after year. Again, this model is imperfect and a great oversimplification however it does provide a frame of reference for what the Cubs have achieved or failed to achieve as the case may be. Even when assuming that one team has a huge and sustained disadvantage (specifically 1/3 to 1/20 the chance of the best team to win the Series), there is a less than three in ten chance that a team could go 100 years without winning the fall classic even once.

So what does this say about the Cubs? Yeah, they're still bad. Even if they epically sucked year after year without exception, there is only about a 30% chance they'd go without winning the series. However if they were much better and merely consistently average, there is still not a small chance that they could happen to not win. So yeah, they've definitely not been good. But they've definitely not been lucky either.




Sunday, January 11, 2009

Making Excuses for The Big Ten's Bowl Performance: 2009 Edition

OK, The Big Ten has taken a lot of heat regarding its bowl record in the recent years. I stopped counting how many BCS games Ohio State has lost. This year Penn State was beaten convincingly by USC and MSU, Minnesota and Wisconsin were never really in their games either. The conference's only bowl win was buy Iowa over South Carolina at the Outback Bowl. One win and six losses altogether. Now, I'll be the first to tell you that you just need to win. Bad calls, bad weather, bad luck, too bad. But it seemed this year there was a lot of piling on by the talking heads saying just how bad The Big Ten was; how the conference was irrelevant, uncompetitive and outmatched by the other leagues. My first thought was- yeah but Big Ten schools travel way, way farther to get to the bowls they play in and in some cases to play at their opponents' home field. It's no excuse for stinking up the bowls but at the very least, it's a reason why these guys need to lay off a solid conference.

The Big Ten as a conference travels farther than anyone else and plays opponents that are less traveled than anyone else. On average, Big Ten schools traveled 2.07 times farther than every other team. The next most traveled conference, The Big East traveled 60% as far as The Big Ten. In terms of opponents travel distance, The ACC's was lowest but is virtually the same as The Big Ten; only a 4% difference. As you may well imagine, The Big Ten also enjoys the largest average travel differential with its opponents.

So what? Well, as it happens the travel ratio of the two opponents is a fairly good indicator of the ratio of the teams' final scores. Better than membership in any conference with the exception of The Pac 10 which went 6-0 in bowls. However, Pac 10 teams also traveled less than their opponent for every bowl with the exception of Arizona which traveled ever so slightly farther to play BYU in The Las Vegas Bowl. If you remove two outliers from the data (including Notre Dame that traveled to Hawaii to deal The Warriors a 49-21 smack-down on their home field and LSU which beat Georgia Tech 38-3 at The Georgia Dome) the effect of travel becomes undeniable. This is probably best shown in this graph:

-click graph for larger view-

On the X-axis, anything less than one is a team that traveled less than its opponent. Notice the abundance of victories, particularly large victories by the team playing closer to home. And as we move along the X-axis, wins become sparser and closer.

Until, they start playing bowl games in places like Madison, Wisconsin, or Evanston, Illinois, it doesn't seem that Big Ten schools are going to get a break on holiday travel. Clearly, they need to get better at playing far from home. I don't have any suggestions in that department. As for everyone that says The Big Ten is irrelevant based on recent bowl performance... lay off.