The other lesson is that the side with the next-largest budget after the top four should not lose hope. Arsenal just needed Liverpool to underplay their wage bill for a few years while Wenger steered his side to 70-point seasons, which was enough to maintain the Gunners’ position in the Champions League. Last year, Liverpool didn’t need the good fortune of Manchester United having perhaps the worst points-to-wage-bill season on record, but they could have made the Champions League with a merely good season as well.
For teams on the lower end, the lift is much more strenuous. The following graph of inflation-adjusted wage bills shows just how difficult it is to build a 70-point squad without elite resources.
These complaints arise every time an attack sputters out near the penalty area with a difficult pass that doesn’t quite reach its target. Clubs that focus on intricate passing attacks through the center of the pitch, most famously Barcelona and Arsenal, regularly field such complaints from fans and pundits alike. And yet, statistical analysis can demonstrate the value of attempting that one extra pass within the penalty box.
The statistic here is something I call “danger zone passes.” The “danger zone” is the region in the center of the 18-yard box from which most goals are scored. DZ passes refer to passes which are played from within a few yards of this central area.
In general, if you get the ball at your feet in this region, you typically have at least a five or 10 percent chance of scoring with a reasonably taken shot. Choosing to pass essentially means letting that opportunity go by, but there are great benefits to passing if you can connect with a teammate in a better position.
Published at SB Nation.
Now, one of the peculiarities of shot quality is that there are lots of ways, tactically, to take good shots. Arsenal are the classic example, they pass and pass, looking especially for through-balls into dangerous areas, and eventually look to “pass it into the net.” The traditional passing game is our primary model of high-quality shot-taking, but in fact it’s not the only one.
The exact opposite tactical method, the “go 4-4-2 and put crosses in” strategy, also produces high-quality shots. If your primary strategy around the box is to get the ball wide and try to play crosses into dangerous areas, you’re going to be taking relatively few low-value speculative long balls. And even though shots off crosses from close areas have lower expectation than normal shots from these areas, they’re still a lot better than shooting from outside the box or from wide areas in the 18-yard box. A bunch of those dots in the top right are Arsene Wenger’s clubs, but another good portion are Tony Pulis.
Published at SB Nation.
The average shot taken in the English Premier League from 2009-2013 has an expected goals value on 8.7%. Arsenal’s shots have an expected goals value of 10.1%. Over a sample of 2693 shots, that is a difference highly unlikely to occur by chance. To put a number of it, there is less than a 1% chance of a club averaging a shot quality that far above league average, on that many shots, by pure random variation. It’s a real tactical effect.