A week on from their important 3-1 victory over leaders Liverpool, Mikel Arteta's side raced into a 4-0 first-half lead against the Hammers, with Odegaard setting up Arsenal's fourth goal scored by Leandro Trossard.
Odegaard then teed up Bukayo Saka for his second goal and Arsenal's fifth of the afternoon just after the hour mark, before former West Ham man Declan Rice completed the rout with a sublime strike just two minutes later.
Saka was named Man of the Match, but Odegaard was one of many standout performers for the Gunners in their biggest-ever Premier League away victory.
Indeed, Odegaard became the first player to complete over 100 passes (107), create at least five chances (seven) and assist multiple goals (two) in the same Premier League match since records began in 2003-04.
Odegaard was full of praise for Arsenal's impressive team performance which helped them move to within two points of Liverpool at the summit.
«It was a really good game and strong performance,» Odegaard told arsenal.com. «I think coming from a big game, a big win, and to come here and back it up with this performance is a brilliant sign.
»During the game as well, we just wanted it more and more and I really liked the performance and the mentality of the team.
«We always want to improve, we always want more. I think we showed that today during the game as well. When you go three or four nil up, it's easy to drop a little bit, but we just kept on going and wanted more. That's why I really liked today.»
Odegaard, who has seven goals and six assists to his name in 30 games this
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