Liverpool are employing a professional throw-ins coach.

The Reds are trialling the services of Thomas Gronnemark with their academy kids — and will roll out the experiment with the first-team too if it proves successful.

The Merseysiders are the first English team to have admitted using the Dane, who has devoted himself to his set-piece art during the past 15 years.

Gronnemark uses video analysis to school players in how to best use throw-ins to maximum effect, most obviously in the opponents' final third.

(Image: AFP/Getty)

He estimates the two teams in Denmark's top-flight he has coached added an extra 20 goals to their tally between them due to improved technique.

While Liverpool are in no way reliant on hit-and-hope tactics, those statistics would provide any top-level boss such as Jurgen Klopp with food for thought.

(Image: Action Images via Reuters)

Position-specific coaches are now commonplace in the Premier League, and Gronnemark clearly feels that, with more careful deployment, teams can use it to great advantage.

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He bills himself as the world’s leading exponent of the art — and has launched the ball over 50 metres.

His greatest success came with Danish side Midtjylland three years ago, with their long throws causing particular problems during a successful run in the Europa League.

(Image: Facebook/Thomas Gronnemark)

He said: “Midtjylland have showed that the long throw-in can be a weapon, if you can do it with the correct technique, precision and tactical awareness.

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“It’s very important that it’s a flat throw-in, because if it’s too high it’s easy to defend.

“If you can make a long throw-in precise and flat, together with some tactical aspects, then it’s much easier to score.”