Meaning of the word "back four" in English

What does "back four" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

back four

US /bæk fɔːr/
UK /bæk fɔːr/
"back four" picture

Noun

1.

a defensive line of four players in soccer or other sports

Example:
The coach decided to play with a back four to strengthen the defense.
Our back four held strong against the opponent's attacks.
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