Featured Research

Measuring the Unmeasurable in Modern Football

Independent football analytics researcher specialising in set-piece intelligence, expected goals modelling, and data-informed recruitment. Current work spans collaborative projects with Outswinger FC, FC Hradec Králové, and Adelaide United FC.

Marc Lamberts Football Analytics Researcher

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Featured Work

Measuring the Unmeasurable in Modern Football

Independent football analytics researcher focused on set piece intelligence, xG model development, and data-driven recruitment. Currently working with Outswinger FC, FC Hradec Králové, and Adelaide United FC.

Marc Lamberts Football Analytics Researcher · Outswinger FC

Recent Research

The stagnation or evolution of zone 14?

By admin februari 7, 2026 Analysis

Once in a while, I have this illusion that I’m well-equipped enough to write a more data-journalistic piece. Don’t worry, the urge will probably sink as soon as it came up, but I want to take advantage of the opportunity. So let’s talk about zone 14 and whether its relevance has changed in the last 5 seasons.

But let’s stop right there for a moment. I have been thinking a lot about writing about football analysis, whether that’s video, data or engineering, and I need to get a few things off my chest.

Modelling Post-Save Rebound Sequences with Hidden Markov Models

By admin januari 25, 2026 Data Analysis, Models

BERLIN, GERMANY – FEBRUARY 28: Union goalkeeper Loris Karius parries an attack from Hoffenheim’s striker Ihlas Bebou in action during the Bundesliga match between 1. FC Union Berlin and TSG Hoffenheim at Stadion An der Alten Foersterei on February 28, 2021 in Berlin, Germany. (Photo by Pool/Andreas Gora – Pool/Getty Images)

Goalkeeper data analysis is one of the hardest things I have experienced doing in this space. So why do I keep challenging myself to do it? The answer is two-fold. First of all, I really want to scout goalkeepers using data, because I think that’s possible. Secondly and the reasons I’m writing this article, is that not many metrics exists for the purpose I want to data scout for goalkeepers. So that’s why I think: “if it doesn’t exist, you have to make it yourself.”

Introducing Expected Second Ball Retention: adding value to second balls

By admin december 31, 2025 2025, 2025, Data Analysis, Models

LONDON, ENGLAND – DECEMBER 22: Igor Jesus of Nottingham Forest is challenged by Sasa Lukic of Fulham during the Premier League match between Fulham and Nottingham Forest at Craven Cottage on December 22, 2025 in London, England. (Photo by Ryan Pierse/Getty Images)

Football metrics and models are also under the influence of trends within football. One of these trends is the use of set pieces to generate meaningful chances in the game. Another big recent trend or influence on the game is the use of long balls, specifically launches. In this article, I want to have a look a this trend, but also look ahead and why long balls are used. And, why are second balls vital