Tag Archives: Adrian the Canadian

Adrian the Canadian explains what happened on the infamous Hail Mary

I’ll let my legal expert, Adrian the Canadian take it away (and believe it or not, this has little to do with the incompetence of the replacement referees and everything to do with the NFL’s replay review procedures):

Every football fan, even the replacement refs, was relieved when the NFL and the real officials resolved their labor dispute. The fast resolution was driven, in large part, by the result of the Monday Night game between the Seahawks and the Packers. By now, even non-fans know what happened. If you’ve been living in a shoe box, here’s the video of the call that encompasses the replacements’ legacy. But simply blaming the replacement refs doesn’t quite get us to the clearly incorrect result. Yes, the refs blew it on the field, but they also had a chance to review the play using instant replay and still allowed the call on the field to stand. How could instant replay fail to correct such an obvious mistake?

The Play:

Down by five, the Seahawks had one chance to beat the Packers: a Russell Wilson Hail Mary pass. While the pass was in the air, Seahawks receiver Golden Tate first pushed off and over a Green Bay defender Continue reading

Instant replay in tennis

This afternoon, I tuned in for the last two games of the Wimbledon semifinal between Andy Murray and Jo-Willy Tsonga. Andy Murray won the match, making him the first British male finalist at Wimbledon in 74 years (no pressure, Andy!).

The winning point was a bit strange, however. Murray hit an aggressive shot that was a tough call for the umpire. The crowd exploded, but then quickly realized the ump called it out. No matter. Murray put a finger in the air and challenged the shot. Under tennis replay rules, players can challenge in or out calls, and the disputes are decided by the Hawk-Eye ball tracking system. Hawk-Eye uses high frame rate cameras to map the trajectory of the ball. The Hawk-Eye trajectory showed the ball nicking the outside of the line, and Murray was through to the finals!

I asked my buddy Tony, a staunch replay opponent, whether he would have felt bad if Murray had lost the match in the absence of replay review. He said no, because he guessed the tennis replay system faces precision issues. This is his standard “blades of grass” complaint. On extremely close plays, there is no way to tell whether a ball (or player, in other sports) is in or out, because it comes down to the deformation of the ball on impact, individual blades of grass, and lack of precision in painted lines.

I set about to prove him wrong, under the premise that a computer-driven system like Hawk-Eye would have definable precision. In one way, I was right. Hawk-Eye’s average error is 3.6 mm. But if that’s the case, why is it used to make calls that are well within it’s margin of error? Continue reading

Part 2: The Return of Adrian the Canadian

Yesterday, Adrian reasserted himself on the blog with a clear proposal to reduce diving in soccer.  Today, he shows off his versatility with a response to my recent thoughts on fairness in U.S. and European professional sports leagues (written in relation to my brother Conor’s defense of talent concentration in European soccer). For a taste of the historical, economic, legal, and political, set aside 10 minutes and read on:

How long has it been? Too long, I think.  But Tyler’s recent post has compelled me to withdraw from my self-imposed hibernation and away from the stultifying process of studying for the Ontario bar exam. In short, I disagree with the capitalist/socialist, American Sports/European Sports dichotomy or, rather, I think it abstracts away from the real issue – that cartels make a heck of a lot more money than entities that exist in competition with one another. In short, the NFL and MLB are not staunch defenders of equality values; Dan Snyder and Hank Steinbrenner are not driving the train to the Finland Station.

The standard argument goes something like this: isn’t it ironic that America, land of unbridled capitalism, home of animal spirits on free and open fields, has “socialist” sports leagues that redistribute resources from winners to losers while red, socialist, pinko Europe has a free and open market for sports talent? It’s a cute argument and one that elicits a nice “hmmm…” from readers and there are certainly large elements of truth to it. American sports are, at least nominally, more redistributive, and there is a larger perception that American sports are organized more “fairly” than European sports from a competitive standpoint. Still, it’s far from clear that European sports are more aristocratic than American sports if we look at the highest levels and, more importantly, I think this distracts us from a deeper, more thorough comparison of why European sports and American sports are organized so differently.

Barcelona’s greatness is undeniable, but it’s not a greatness that has translated into a dynasty at the highest levels of competition. While Barca has been the dominant team in La Liga, it’s only won three of the last ten Champions League titles despite making each of the last ten tournaments. This means that the Champions League may not even be as “aristocratic” as the NBA:  eight different teams have won the Champions League while only six have won the NBA championship in the same span. And, unlike La Liga Continue reading

Part 1: The Return of Adrian the Canadian

It’s been awhile since we’ve heard from the real Rules Guru, Adrian the Canadian. He has a good excuse – he’s been busy studying rules that actually matter to prepare for Ontario’s bar exam. However, my recent post addressing two soccer articles by my brother Conor lulled him out of hiding. Conor’s spot-on tribute to the toughness of Carles Puyol set me off on a tangent about soccer’s worst trait: diving. In Part 1 of his return, Adrian tells FIFA how to clean up this eyesore:

I’ve been watching a lot of Euro 2012 recently. The standard of play has been high. Games have featured ample scoring, good defense, and the top teams have made it through, leaving us with two potentially excellent semi-finals and the prospect of an even better final. And yet I’m still deeply troubled by the amount of diving in the game. Every half features at least one or two incidences of notorious play acting as players, in an attempt to draw a foul, contort and moan on the grass. It’s not just inelegant, it slows down the game and interrupts potentially excellent passages of play. Worst of all, I think the problem is a tractable one, just one that football authorities have been reluctant to combat.

The biggest problem with eliminating diving is that there will always be a tremendous incentive for players to dive. As we all know, it’s very difficult to score in soccer. Having a stern penalty for fouls in the penalty area – a penalty shot and near sure goal (unless you’re England) – opens up play and increases scoring. The issue is compounded by the fact that soccer is a fast game. It’s very difficult for officials to determine whether a challenge was legitimate or not or whether a player is diving or was actually hurt by a tackle. Thus, we should avoid a rule that makes scoring more difficult or a rule that puts a greater onus on the referees – they’re in a difficult enough situation as it is.

The most intuitive solution is what the MLS does (and what the NBA is threatening to do) – it decreases the incentive to dive Continue reading

More NBA spatial data

Adrian the Canadian — my designated Deadspin trawler — sent me an interesting graphic by Kirk Goldsberry and Matt Adams showing the highest percentage shooters from various regions of the court. You might recall that Goldsberry presented similar work at the Sloan Sports Analytics Conference in March (runner up for the research award). My take on this work is that, while interesting and impressive in terms of data, much of the spatial variation in shooting could be explained by factors other than location-specific shooting ability (this will sound familiar if you read my post yesterday on player tracking data).

First, random chance is an issue, especially when trying to identify the best shooters at each location. I think Goldsberry requires a certain number of shots for inclusion at each spot, but he doesn’t do the statistical analysis to determine whether the differences he presents are statistically significant (i.e., large enough such that they are probably not due to chance variation). His big surprise — Rondo leading the league in one mid-range zone — is likely based on a fairly small sample of shots.

Second, defensive position is missing from the analysis. A big red flag for this one is that Durant, at only 40% shooting, leads in the three point zone just to the shooter’s right at the top of the key. Every other three point zone has a guy over 50%. Unless there’s something challenging for right handers Continue reading

Why are the hockey playoffs so unpredictable?

The NHL playoffs have many more upsets than the NBA. Adrian the Canadian tells me that this is ruining their product, since the most exciting teams often get unlucky and bow out early. I can’t help but agree — I stopped watching this year after my favorite team (the Red Wings), my local team (the Bruins), and probably the best team (the Penguins) got bounced. The NHL wasn’t always so unpredictable — the Canadiens, Islanders, and Oilers won 13 of 15 cups between 1975-76 and 1989-90. Adrian’s theory is that the the rise of the butterfly goalie has increased save percentages, which makes outcomes more random.

It’s pretty easy to show that increased save percentages do indeed muddy up the result. I generated 1,000 simulated games for three sets of parameters. First, the 1980s (before the butterfly):

  • Both teams: 89% save percentage
  • Team A: 32 shots per game on average
  • Team B: 28 shots per game on average

Then, for the late 90s/early 2000s (butterfly goalies, slightly fewer shots on average perhaps due to popularity of the neutral zone trap): Continue reading

LOS LIIIIIINNNNNNKKKKSSSSSS!!!!!!!!!!!!!!

This week’s LOS LIIIINNNKKKKSSSS!!!!!!!!!!!!:

As always, send me los links if you have something funny, sports-related, intelligent, and/or intriguing.