The Constraints Collective
Our mission is to transform practice environments in sport by equipping coaches with the knowledge, understanding and skills to bridge the gap between skill acquisition theory and practice.
The Constraints Collective
Latest Episodes
#100 Use The Funnel, Not the Average Value: Chris Button on the PhD That Almost Wasn’t (Part One)
In this landmark 100th episode, Ian Renshaw and Keith Davids are joined by Professor Chris Button from the University of Otago, whose research has ranged from ball-catching biomechanics to basketball free throws to, more recently, why so many p...
The Video Doesn't Show What Happened — Ian Renshaw & Keith Davids Review Schütz, Betsch & Plessner (2026), with guest Scott Russell
An emergency episode: VAR was dominating the World Cup news cycle, and a paper had just landed asking the exact question everyone was arguing about. Ian Renshaw and Keith Davids review Schütz, Betsch & Plessner's "The Impact of Video Speed ...
#98 From the Pitch to the Algorithm — with Ben Teune
# From the Pitch to the Algorithm — with Ben Teune In this episode, Ian Renshaw and Keith Davids are joined by Ben Teune, Sports Scientist and Analytics Lead at the WTA (Women's Tennis Association), whose PhD work — embedded with the Western Bu...
#97 Round Up 11 — Your Team Was 29 Points Up. Here's Why That's the Dangerous Part.
The San Antonio Spurs led Game 4 of the 2026 NBA Finals by 29 points and lost it on a tip-in with 1.2 seconds left — the biggest comeback in Finals history. Ian Renshaw and Keith Davids use it to argue momentum isn't a mindset problem but a sta...
Episode #96 Daniel Lycett Guest Review
Keith and Ian go back through Daniel Lycett's PE curriculum redesign from episode 81 — and pull apart what was really going on underneath it: context, donor sports, and designing tasks people can actually succeed at. Along the way: Lego therapy...