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The EFL Cup is the other cup that McTominay has won with Manchester United. It is a knockout competition involving teams from the top four tiers of the English football league system. McTominay played in the 2016-17 EFL Cup final, which Manchester United won 3-2 against Southampton. He also played in the 2020-21 EFL Cup final, which Manchester United won 2-0 against Newcastle United.