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

NFL: Is Purdy a good Quarterback?

By admin december 27, 2025 NFL

INDIANAPOLIS, INDIANA – DECEMBER 22: Brock Purdy #13 of the San Francisco 49ers makes a pass for a touchdown during the first quarter of the game against the Indianapolis Colts at Lucas Oil Stadium on December 22, 2025 in Indianapolis, Indiana. (Photo by Dylan Buell/Getty Images)

Since I’m also writing about other sports, I’m going to take the opportunity to see how we can use data in other sports as well. What can we learn from identifying and analysing talent in the NFL? In this article, I will have a look at QB Purdy at the San Francisco 49ers and attempt to answer the following question: is he a good quarterback, above average, or does he profit from a good attacking system?