Alexander-Arnold, who is out of contract at Anfield at the end of the season, has made 349 appearances for his childhood club Liverpool since making his first-team debut in 2016.
The English defender has become one of the Premier League's most effective playmakers under Jurgen Klopp. Arnold has also played a key role in Liverpool's run for the Premier League under Arne Slot.
Arnold's extraordinary contribution to Liverpool has helped redefine the expectations surrounding a full-back. He is the main playmaker and the centerpiece of the team. Despite being a defender in name, Arnold has accumulated creative numbers to compete with any other '10'.
In fact, since his Premier League debut in December 2016, Arnold has created many second chances among players in the tournament, only behind Manchester City's Kevin De Bruyne.
Arnold created a total of 22 out of 514 chances during that time, more than any other defender. His Liverpool teammate Andrew Robertson is second with 421 chances created. Then there's Lucas Digne, formerly of Everton and now of Aston Villa, with 330 caps.
Looking deeper into the numbers, we can see the 26-year-old's endless creativity.
For example, Arnold has failed to accumulate as many assists just by being an effective corner kick player. Instead, the England international has proven his ability to create an attack threat in many aspects.
Let's consider the fact that, since the start of the 2018-2019 season, during his first full-time campaign as a player for Liverpool, Arnold has ranked sixth among Premier League players in terms of the number of chances created from live football, in addition to being third in terms of the number of chances created from set pieces.
During that time, the Kop defender made a total of 88 cross-line passes, the seventh most of any player in the Premier League and nearly four times more than any other defender.
Meanwhile, a total of 63 assists in the same period helped the defender born in 1998 rank third, only behind his Liverpool teammate Mohamed Salah with 75 assists and De Bruyne with 74 assists. His 64 assists in the Premier League total are the highest by any other defender in the competition's history.
However, the assist is not the best reflection of a player's creativity. Because it depends on the finishing ability of others. A better way to measure the real quality of the opportunities created is the "expected support" (xA). This is a measure of the likelihood of a chance leading to a goal. Arnold's numbers are unparalleled in this aspect.
Since the start of the 2018-2019 season, Arnold has accumulated a total of 58.67 xA, putting him at the top. As a defender, Arnold is a surprise presence in the squad that includes excellent attack midfielders and strikers such as De Bruyne, Salah and Bruno Fernandes.
Arnold has often operate in areas deeper than those players, although he is allowed to drift into the middle of the pitch. However, no one was better than him in getting the ball into the opponent's penalty area.
In total, the 26-year-old has made 2,593 passes into the box since his Premier League debut, the most of any other player.
Arnold's outstanding ball distribution ability is not only a means of creating opportunities. This is also extremely valuable in stretching the opponent's formation. Arnold's precise cross-court passes have become a trademark and a key feature in Liverpool's approach.
Since Opta began recording data in the 2017-2019 season, the defender born in 1998 has made 400 return passes, nearly double that of any other player. Brighton centre-back Lewis Dunk is in second place with 236 points. This is just another factor that makes Arnold different.
