An Overlooked Opportunity
For most of soccer’s history, the throw-in was a non-event. It was a moment to catch your breath, reset the defense, and simply get the ball back in play without much fuss. The conventional wisdom was to throw it down the line and hope for the best. Studies
showed that teams lost possession from about half of their throw-ins when under pressure, a staggering turnover rate for something so frequent. For years, coaches and players accepted this as a simple reality of the game, focusing their set-piece attention almost exclusively on more glamorous opportunities like corners and free-kicks. The throw-in was seen as a low-reward restart, too mundane to warrant strategic innovation.
The Marginal Gains Revolution
The shift began with the rise of data analytics and the philosophy of "marginal gains"—the idea that small improvements in multiple areas can add up to a significant competitive advantage. Teams started to question every overlooked aspect of the game, and the throw-in was a prime candidate. The pioneer of this movement is Danish coach Thomas Grønnemark, arguably the world's first and only dedicated throw-in coach. After seeing an article about his work, Liverpool manager Jürgen Klopp hired Grønnemark in 2018. Before his arrival, Liverpool ranked 18th in the Premier League for retaining possession from throw-ins under pressure, succeeding just 45.4% of the time. A season later, they were first in the league at 68.4%, and second in all of Europe. Grønnemark’s success with Liverpool, and later with clubs like Ajax and Brentford, proved that dedicated coaching could transform this restart into a tactical tool.
The Throw-In Playbook
So, what does a set-play throw-in actually look like? It’s not just about one player launching the ball into the box, though the long throw is certainly a potent weapon. Grønnemark’s philosophy is built on three pillars: long, fast, and clever. The "long" throw is what most people picture, turning a restart in the attacking third into a situation similar to a corner kick. Teams like Brentford have perfected this, using coordinated runs and creating overloads in the penalty area to attack the ball and win second chances. The "fast" throw is about exploiting a disorganized defense before they can get set. But the real game-changer is the "clever" throw. This involves coordinated movements across the field, with players making decoy runs to create space for the intended receiver, much like a pick-and-roll in basketball. By using specific patterns and giving players multiple options, teams can retain possession reliably and even initiate dangerous attacks from what used to be a 50/50 ball.
More Than Just Keeping the Ball
The benefits go far beyond just improving possession stats. A well-executed throw-in strategy allows a team to control the tempo of the game, relieve defensive pressure, and create scoring opportunities from unexpected situations. In his first two seasons with a throw-in coach, Liverpool scored 13 goals that originated from throw-in situations. Brentford has become renowned for their set-piece prowess, with their throw-in threat allowing them to consistently punch above their weight in the Premier League. They use long throws to create chaos in the box and short, clever routines to manipulate defensive setups, exploiting the fact that there is no offside on a throw-in. This focus proves that optimizing every restart, no matter how small, can directly translate into a stronger attack and a more resilient defense. It forces opponents to prepare for a threat they may have never considered before.
