The unbeaten Reds extended their lead of the Premier League to 13 points with a comprehensive display just four days after returning from Qatar as world champions.
After creating two goals for Roberto Firmino, Alexander-Arnold capped the night by rifling in a low finish, with James Milner also on target from the penalty spot.
Post-match, Alexander-Arnold spoke to Amazon Prime Video about the quality of the performance, his strike and the situation in the title race…
On whether that was Liverpool’s best performance of the season…
Yes, we played really good football, especially after all the travelling we’ve done and the intense period we’ve had.