Former Newcastle striker Shearer hailed Alexander-Arnold's performance in Liverpool FC's 5-0 win.
Liverpool maintained their advantage over the reigning champions courtesy of an emphatic performance at Anfield, where Sadio Mané and Virgil van Dijk both scored twice and Divock Origi was also on the scoresheet.
With four draws in their last five matches, critics had wondered whether Liverpool were starting to run out of steam so this was the ideal response.
Roberto Firmino was subbed off in the first half against Manchester United, but the ankle injury he suffered isn't as serious as presumed. While The Reds have still only lost one game this season, three draws in their last four league outings has seen their once healthy lead over Manchester City quickly evaporate. "Tomorrow is another day and we have to deal with all the things". We draw against Bayern and against United and everybody talks about.
"If we have to change a few things, we will change". Tonight we were stable and sensational. That is sometimes possible, sometimes not, but you have to be stable and the boys were always stable and really fluent offensively.
"It's good. It's a very good example of how football should look and let's try to do it again and again".
Asked for his thoughts on City's defeat of the Hammers and the title race, Klopp told a media conference: "I don't think you need an answer from me".
The second one? I didn't see it!
Mane managed to get on the end of another Alexander-Arnold cross to put the home side in a commanding position with 70 minutes left to play. It was clear he would help us in all the build-up situations because he is this kind of footballer, but we needed him in the box as well.