England boss Gareth Southgate said leaving goalkeeper Joe Hart and defender Ryan Bertrand out of his World Cup squad after they featured throughout the qualification stage was one of his toughest moments as boss.
Match of the Day host Gary Lineker was also pleased to see Alexander-Arnold's inclusion, and also hailed Southgate for naming Ruben Loftus-Cheek in the squad. Gary Cahill is likely to lead the Three Lions at the World Cup. We have got some great young players.
"The first call up for Trent Alexander-Arnold is well deserved". Only two players are over the age of 30, and only one player has more than 38 caps.
Gareth Southgate has named his 23-man squad for the 2018 World Cup and although not entirely universal, the response from critics and supporters has been on the whole positive.
Ruben Loftus-Cheek and Fabian Delph were preferred to the Liverpool midfielder who has struggled with injury problems this season.
However, he has fallen behind Jordan Pickford, Jack Butland and Nick Pope after making errors and losing his place during a loan spell at West Ham from Manchester City. Lallana's injury-ravaged season has cost him, with England also denied the services of Alex Oxlade-Chamberlain following the knee injury he sustained last month.
Was Leon Bailey *really* "trolling" England fans shortly before the announcement of their World Cup squad? No.
Ex-United forward Danny Welbeck is the only Arsenal player selected, and will likely be backup the likes of Kane and Leicester City's Jamie Vardy.
Harry Kane, Jamie Vardy, Marcus Rashford, Sterling and Welbeck are England's attacking options.
The identity of England's captain and first-choice goalkeeper in Russian Federation are also sure to come up when Southgate speaks to the media.
I've nearly surprised myself by not picking Eric Dier but I'm looking to be on the front foot in midfield in the opening game and Jordan Henderson can do the holding role with slightly superior distribution.
England's first match in Russian Federation is June 18, against Tunisia.
"The selection process has been over months really, it's not just been the last few weeks".
He joins Tom Heaton, James Tarkowski, Lewis Cook and Adam Lallana in being placed on the back-up list. "We feel the team are improving and we want to continue that momentum".