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Statistical Analysis of Patrick Dangerfield

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Liverpower

Debutant
Jul 28, 2009
81
82
Edinburgh
AFL Club
Port Adelaide
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Liverpool
It would be an understatement to say that the other Dangerfield thread isn't exactly full of objective analyses of his strengths and weaknesses as a player. So, I am starting a thread to rectify that. What I have done is compared Dangerfield with many of the top midfielders in the league over the past four years across a range of key metrics. The other players are Ablett, Swan, Pendlebury, Griffin, Johnson, Selwood, Mitchell, Watson, Beams, Cotchin, Kennedy and Sloane.

This is not meant to be a complete list of the best mids over that timeframe and so don't be offended by individual inclusions or exclusions (Judd, Murphy, Boyd, Jones, etc). My aim was simply to see if Dangerfield could be thought to be in the top-5 among a particular group of midfielders that many would regard as the competition's benchmarks over the period. I threw Sloane in because I wanted to compare Dangerfield to Adelaide's other current top midfielder.

Two caveats before I start. First, the indicators I focus on - total disposals, effective disposals, contested disposals, the variance of total disposals, goals, goal assists, tackles, and inside-50s - do not fully summarise what a player adds to a team. I only had so much time to put this together and am happy to see others add other indicators that they think are relevant to the discussion (1%ers, metres gained, hard ball gets, etc). Second, yes, I am a Port supporter. However, as you can see from the rarity of my posting, I'm not involved in the daily BF flame wars. So, judge me on my analysis, not the team that I support.

Let me begin with Dangerfield's relative strengths. First, he is arguably the best goal kicking midfielder in the game. In three out of the last four years he has been in the top-100 players in the competition for average goals per game. Ablett, Swan and Beams have also been in the top-100 three times but Dangerfield's goals per game is slightly higher. Steve Johnson has a higher average over the past four years but that is driven by his 2011 numbers. Since he became more of a full-time mid his numbers have dropped below Dangerfield's averages.

Dangerfield's value forward of centre can also be seen by comparing his inside-50 stats. In 2012 he was ranked second in the competition for average inside-50s per game and in 2013 he was eighth in the competition. He is down this year but it is still early in the season and so the sample is too small to make strong inferences. Other players that excel in this area are Griffin, Ablett, Swan, Selwood and Johnson, though Dangerfield's averages over 2012 and 2013 are second only to Griffin over that time frame.

Dangerfield's other key strength is in contested posessions. He was ranked second in the comp for contested posessions per game in 2012, sixth in 2013 and fourth so far this year. Indeed, over that three year period his average ratio of contested posessions to total posessions has been 60%. The only top mid with a better ratio is Kennedy from the Swans and even then only just. For comparison, Ablett and Pendlebury both have ratios below 50%. As an interesting aside, in 2011 Dangerfield was ranked 32nd in the comp for contested posessions despite not even being in the top 100 in the competition for total posessions.

Now for the weaknesses. First, Dangerfield simply gets less of the ball than the other top midfielders in the game. His best result for average posessions per game over the past four years is his ranking of 14th in 2012. He then dropped to 47th in 2013 and is 61st so far this year. He averages 8 fewer posessions per game than Ablett over the past three years, six less than swan, 5 less than Pendlebury, 4 less than Mitchell, 5 less than Beams, 4 less than Watson, and the list goes on.

Unfortunately, he does not appear to make up for getting less of the ball by using the ball more effectively. His best ranking for total effective disposals is 48th in 2012 and he was ranked only 99th last year. His average ranking decline between total disposals and effective disposals is larger than for any of other top midfielders in the competition besides Cotchin. This is where his reputation for burning the ball comes from. Other players whose ranking slides on the basis of effective disposals are Johnson, Swan and Kennedy. Interestingly, Sloane's rankings improve on this metric - he has been ranked in the top 100 for effective posessions in each of the past three seasons.

Now an important reason why Dangerfield's effective possessions are down is because a larger proportion of his posessions are contested. But the average ranking decline is seems larger than can be explained by that alone. For example, Kennedy's average ranking decline is 15 places compared to more than 40 for Dangerfield.

Another area where Dangefield appears to fall short is in goal assists. He has never ranked in the top 100 in the competition on this metric. Every one of the other mids in my comparison list have done so on multiple occasions, with Ablett, Pendlebury and Johnson doing so in each of the four years. Sloane has ranked in the top 100 twice. So, Dangerfield scores more goals than other comparable mids but this is partially offset by the fact that he contributes less to others. I don't watch enough of his games to judge whether that fact is attributable to selfishness or to other factors.

Finally, Dangerfield does not appear to be a committed tackler. The only year of the four that he has been in the top 100 in the competition for average tackles per game is 2014 and even then he only ranked 90th. Again, almost all the other top mids are higher up in the tackle rankings. Ablett, Pendlebury, Selwood, Kennedy and Sloane have been ranked in the top-100 every year. The only other top mid not to appear in the top 100 in any year is Swan. I was surprised by this finding as usually there is a high correlation between contested ball winning and tackling.

In summary, what you get from Dangerfield is one of the best contested ball winners in the competition, who drives the ball into the forward line and scores more goals than other top midfielders. If you were judging the best mids in the comp on that basis alone he would probably be ranked top five. However, those positive attributes are somewhat offset by the fact that he doesn't get as much of the ball as the other best mids in the game and disposes of it much less effectively. While his high contested posessions point to a strong team player, his low tackle count and goal assists may be suggestive of a selfish streak. He also has a high variance in his posessions from game to game compared with many other mids.

On balance then I think it is difficult to argue that he is currently one of the top-5 mids in the competition, though he is clearly a great player that would add a lot of value to any team in the competition, including Port! To get there I think he needs to raise his effective disposals and get more involved in tackling and giving off goals to others. Beams comes out better on those categories, though not in some others.

Of course, he is only 24 and so probably has not reached his peak yet (despite the fact that 2012 was his best statistical season so far). Nearly all of the other mids I identified are older and will start to drop down the rankings over the coming years. The question is whether Dangerfield will rise up or other, even younger mids, will overtake him.
 
You make a lot of mentions to his lower position rankings in various stats but sometimes that kind of data can be misleading when you don't know the actual value difference between those rankings.

e.g. (just pulling numbers here) Dangerfield might be ranked 80th in some stat while other midfielders are ranked around 20th but what isn't shown is that the actual difference between 20th and 80th is only an average value of 0.8, so in reality there isn't really much of a difference there.

Not saying you're trying to mislead people with how you're presenting stats but anyone who looks at it objectively might question why you wouldn't actually include the totals and averages there. Unfortunately for you, being a Port Adelaide supporter in this case, people are going to assume you're pushing an agenda.
 

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Did you look at metres gained? Dangers strength other than contested ball and kicking goals is running with the footy and long kicking.

Also stats don't prove if he is a Top 5 mid or not I mean watch some games. Also why are all Port fans obsessed with the crows?
 
For all the effort, you didn't really reach any new conclusions, or differ from what the majority think anyway - that he's a good young mid who can be a bit iffy with his kicking and decision making, and needs to work on his defensive side.
Actually, there was quite a diverse set of opinions in the other thread, without much data to back it up. His strengths and weaknesses both come out more clearly with the deeper analysis.
 
Did you look at metres gained? Dangers strength other than contested ball and kicking goals is running with the footy and long kicking.

Also stats don't prove if he is a Top 5 mid or not I mean watch some games. Also why are all Port fans obsessed with the crows?
No, I didn't have access to that data when I did the analysis, though I did note that it would be worth looking at. I suspect that you are right that he would come out quite well on that statistic.

Stats don't prove anything but they are a complement to any complete analysis of a player. The clubs certainly take that type of analysis seriously, for obvious reasons. Other sports, particularly in the US, have made enormous leaps with advanced metrics (so, much deeper than I have gone into in the OP) in recent years and the general conclusion has been that better statistical analysis improves clubs'/journalists' ability to analyse the value that certain players provide. Data analysis has progressed here too but it is still in its infancy.
 
Actually, there was quite a diverse set of opinions in the other thread, without much data to back it up. His strengths and weaknesses both come out more clearly with the deeper analysis.

They also come out pretty clearly by watching a quarter or two of him play. No real "deep analysis" required IMO.

Most of the reaction in the other thread is reaction to the extreme hype he has received over the years. Hype influences viewpoints on lots of players.
 
Statistical analysis without any stats?

At least some kind of readable table would be nice.

The other thing when assessing Dangerfield that would be required is time of game spent forward. Adelaide's midfield strength v forward line strength particularly since Walker went down surely means Dangerfield plays more forward than most other mids. That's going to change all his stats.

I fear your collection of stats is not only difficult to comprehend but in the end adds little to the subjective analysis.
 

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Finally, Dangerfield does not appear to be a committed tackler. The only year of the four that he has been in the top 100 in the competition for average tackles per game is 2014 and even then he only ranked 90th. Again, almost all the other top mids are higher up in the tackle rankings. Ablett, Pendlebury, Selwood, Kennedy and Sloane have been ranked in the top-100 every year. The only other top mid not to appear in the top 100 in any year is Swan. I was surprised by this finding as usually there is a high correlation between contested ball winning and tackling.
Thank you for pointing this out. For an inside midfielder he is very much a one way footballer. It's his biggest flaw, much more so than his kicking.
 
Thank you for pointing this out. For an inside midfielder he is very much a one way footballer. It's his biggest flaw, much more so than his kicking.
This might be complete BS but my thoughts are players who get tagged (especially heavily like Dangerfield) probably will tackle less than those who aren't. Because it's their job to go get the ball and they already have a player on their back. It's pretty much 17 on 17 compared to those who are left alone more and then have a defensive responsibility.

Last year Ablett (as probably the heaviest tagged player in the league) was 4.6 tackles per game. Dangerfield 3.2. Ryan Griffen as probably another of the top players tagged last year was 4.9.

I'd say Dangerfield has to increase his tackles a little but I'd hardly say it was a significant concern.
 

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Dangerfield is the best mid for Adelaid and always gets tagged. Watson and Ablett the same. When you have multiple options ie Hawthorn and Collingwood where a number of mids can be tagged then you are not comparing apples with apples. Let it be said I for would love any of the players mentioned playing for Brisbane.
 
You make a lot of mentions to his lower position rankings in various stats but sometimes that kind of data can be misleading when you don't know the actual value difference between those rankings.

e.g. (just pulling numbers here) Dangerfield might be ranked 80th in some stat while other midfielders are ranked around 20th but what isn't shown is that the actual difference between 20th and 80th is only an average value of 0.8, so in reality there isn't really much of a difference there.

Not saying you're trying to mislead people with how you're presenting stats but anyone who looks at it objectively might question why you wouldn't actually include the totals and averages there. Unfortunately for you, being a Port Adelaide supporter in this case, people are going to assume you're pushing an agenda.
That is a very good point. I have actually compiled the raw numbers as well and the ranking gaps for most indicators generally reflect significant statistical gaps as well. For example, the top tackling mids average more 2 to 3 additional tackles a game that Dangerfield does. On the flip-side, his ratio of contested posessions/total posessions is an outlier in the other direction. At some point I will post the raw data for people to look at.

No doubt that what I have written will be judged partly on the basis of the team that I support, but I don't think it should. I haven't sought to use only those statistics that undermine Dangerfield's value. The analysis is consistent with him being an exceptionally good and valuable player. Just not top 5 in the competition.
 
Except Chris Judd lays tackles.

Highest number tackles in a season Dangerfield has achieved is 77. Judd's best is nearly double that.

Chris Judd - 4.01 tackles per game over his career (3.56 per game from seasons 1-6 as well, which is the age Dangerfield is at)
Patrick Dangerfield - 2.99 tackles per game over his career

Dangerfield isn't great defensively, but there no doubt Judd is pretty average in that area for a midfielder himself.
 
Statistical analysis without any stats?

At least some kind of readable table would be nice.

The other thing when assessing Dangerfield that would be required is time of game spent forward. Adelaide's midfield strength v forward line strength particularly since Walker went down surely means Dangerfield plays more forward than most other mids. That's going to change all his stats.

I fear your collection of stats is not only difficult to comprehend but in the end adds little to the subjective analysis.
Fair point, but that can easily be provided.

On the other point, he does spend more time up forward than some other mids, which is one reason why he scores more goals on average. However, his goal assists are very low for a player that spends above average time up forward, so that is still consistent with my broader point about needing to involved his teammates more than he does.
 
They also come out pretty clearly by watching a quarter or two of him play. No real "deep analysis" required IMO.

Most of the reaction in the other thread is reaction to the extreme hype he has received over the years. Hype influences viewpoints on lots of players.
Sometimes viewing perceptions are consistent with statistical evidence, sometimes not. Always worth checking it out. Also, it makes the debate more evidence based rather than just a collection of people's perceptions.
 

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Statistical Analysis of Patrick Dangerfield

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