European Football 2018-2019: week 1 in the EPL, Ligue 1 and Eredivisie

The first weekend of games in the 2018-2019 season were played in the Premier League, Ligue 1 and the Eredivisie.

I was keen to learn how my naive priors for game outcomes fared in the excitement of the first week of the season in England, France and the Netherlands in the 29 games played.

EPL

The priors and posteriors for four game outcomes (n = 10 games):

The differences in these outcomes:

For home and away outcomes:

Ligue 1

Four game outcomes (n = 10 games):

Eredivisie

Four game outcomes (n = 9 games):

Scoring First and Not Losing

I am interested in the impact of the first goal scored in a game. Based on last season’s competitions, my priors for scoring first and not losing in the EPL, Ligue 1 and the Eredivise are 0.81, 0.83, and 0.78 respectively. After week 1, the relationship is:

There were no games in the EPL in which the team scored first lost.

In Ligue 1 there were two games in which the team scored first lost: Rennes v Lille (Rennes the away team, Lille equalised in 2 minutes); Montpellier v Dijon (Montpellier the home team, Dijon equalised after 47 minutes). There was one game in the Eredivisie in which the team scored first and lost: Zwolle v Heerenveen (Zwolle the home team, Heerenveen equalised in 4 minutes).

Photo Credits

Leroy Sane (Twitter)

Gianluigi Buffon (Twitter)

AZAlkmaar (Twitter)

Sharing Stories

Yesterday, I was on my way to adjudicate a public speaking event at a school in Braidwood.

It was a short walk and on my way my phone alerted me to some exchanges about . Amongst others, Michael Lopez shared this observation:

The quote came from Ted Knutson at the Getting Shots Inside the Box-Cox, Transformational Soccer Analytics session at the JSM’s Section on Statistics in Sports.

I had a quick look at what was going on in Vancouver and then went on to the school to hear pupils speaking on the topic “Every Family Has A Story“. I had the good fortune to listen to Year 5s share their family stories. Each pupil had three minutes to share their story. In the time it takes to play a game of football game I met families with ancestors that:

  • Were on the First Fleet
  • Participated in the cavalry charge at Beersheba
  • Have farmed in Braidwood from the earliest days of settlement
  • Left Braidwood for the WW1 battlegrounds of Europe some to return others to lie in foreign fields
  • Found refuge from persecution in Russia and in Germany

There were contemporary stories too of families moving to the area from cities, other regional towns and other countries.

In all there were 17 stories shared. I was entranced and humbled by their stories. I thought they showed great courage in speaking in public, particularly in the presence of someone called an adjudicator.

It prompted me to think not only how the pupils’ teachers might understand the richness and diversity of families’ experiences and support personal learning journeys. It was a great time, I think, to engage in conversations about the excitement of public speaking and how that differs from public reading (some students were nervous and tended to read out their prompt notes without any eye contact with their audience).

I had turned my phone of during the event. After walking home, I discovered that stories were being shared in Vancouver too:

… that crossed cultures to provide opportunities for connections:

I wondered if the participants in these conversations came up with a consensus about how we might have longer term conversations with coaches.

Perhaps fragments of thought might help us. Mark Upton is up to fragment 12 in his conversation about sport systems. In 12 there is a one-liner that can unlock powerful exchanges:

To think that we get to make a plan and direct the organisation toward a pre-specified outcome is just an illusion… a failure to recognise the complexity of the systems we are dealing with.

Perhaps clarifying what we do might help too. Cassie Kozyrkov notes in the context of data science:

Applied data science is a team sport that’s highly interdisciplinary. Diversity of perspective matters! In fact, perspective and attitude matter at least as much as education and experience.

She identifies:

  • Data engineer
  • Decision-maker
  • Analyst
  • Expert analyst
  • Statistician
  • Applied machine learning engineer
  • Data scientist
  • Analytics manager/ data science leader
  • Qualitative expert/ social scientist
  • Researcher

Cassie concludes her discussion with an analogy of innovating in the kitchen:

… if you personally want to open an industrial-scale pizzeria that makes innovative pizzas, you need the big team or you need to partner with providers/consultants.

… if your goal is just to make standard traditional pizza, you don’t even need all that: get hold of someone else’s tried and tested recipe (no need to reinvent your own) along with ingredients and start cooking!

I wondered if coaches are able to give us time, as an antidote to being too busy, we could start to have meaningful conversations. These are for me Year 5’s public speaking. The alternative is public reading. In the latter case we just provide data and are unable to start a conversation about insight.

In the process of writing this post my mind has wandered from memories of Vancouver, to thoughts of an 18th century sailing ship, a cavalry charge at Beersheba, the horrors of trench warfare for very young boys from country NSW and my recall of moments of close connection with coaches.

I am hopeful that we can in our interactions with coaches make memories and build stories … even difficult ones.

Fifty years ago, W E H Stanner gave the Boyer Lectures. In them, he argued that “Australia’s sense of its past, its very collective memory, had been built on a state of forgetting”.

It is a structural matter, a view from a window which has been carefully placed to exclude a whole quadrant of the landscape. What may well have begun as a simple forgetting of other possible views turned under habit and over time into something like a cult of forgetfulness.

Our occupational culture has a rich array of skills to share in sport.

One of these is as an audience for stories, another is sharer of stories. For me, the exciting one is as co-creator of stories with coaches … that open up whole quadrants of the landscape.

Re-view Super Netball 2018: Round 13 Lightning v Swifts

Some of the delegates from the 14th Australasian Conference on Mathematics and Computers in Sport attended the Sunshine Coast Lightning v NSW Swifts netball game on 28 July 2018.

I wrote about their visit in a previous post. I shared some netball data relevant to the game in a GitHub repository. I have written a postscript about the data in the READ.ME file for the repository.

My summary chart is:

As the game progressed, the probability of the Lightning winning moved from 0.63 after leading at the end of the first quarter of the game to 0.76 after leading at half time to 0.87 with their lead at the end of the third quarter.

The two teams met in Round 7 this season’s competition. I thought the Lightning’s first quarter performance reflected their determination after losing the first quarter of that game by 10 goals. Their final quarter performance was also better than their median performance for that quarter this season.

The Swifts underperformed in the game compared to their median scoring profile this season. It would have been interesting to have attended the game to observe the pressure the Lightning placed on the Swifts.

A report of the game included these observations:

The defence of the Lightning did the job at USC Stadium. Karla Pretorius finished with six intercepts, Madeline McAuliffe was a brick wall in the second half and centre Laura Scherian was the Nissan MVP to complete the defensive triumvirate.

The Swifts were competitive and fought to the final whistle, but they were left to rue a number of missed opportunities to score off turnovers.

Post-game I looked for some temporal patterns (T-patterns) to support evidence of strong Lightning performances in quarters 1 and 4. The Champion Data scoring flow for the game had these sequences of scoring within the overall alternating of possession:

Quarter 1

Quarter 4

Photo Credit

Courtside (Andrew Simmons, Twitter)