A player recieves a ball when he wins it from another player or when it is passed to him. He also receives it during set pieces.
Player, the keeper is normally #1
If the goal keeper's team has substitutions remaining, then another goal keeper may replace them. If not, then a field player must be nominated to become the new goal keeper.
Yes, one player on the field must be designated as the goal keeper.
The referee is the official time keeper in a soccer match.
Technicaly the keeper is always the keeper which is why he is wearing a diffrent uniform. In the rules it states that a team must be made up of ten players and a keeper you must have a keeper at all times. If he is out of the box he acts as any other player and cannot use his hands. You could have your keeper playing striker if you wanted as long as he was still wearing somthing to distinguish him as the keeper.
you let another soccer team use one of your players
Yes they do. A soccer keeper glove is made to completely fit a keeper's hand and has 5 finger slots.
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A Libero is a noun and in the sports field is directed to soccer and to volleyball. In soccer the word refers to a player called "The Sweeper" who protects the goal keeper. In Volleyball the word refers to the player who plays in the back row.
The goal keeper is always considered a defender, if he is in or out of the penalty area.
You can get a agent from another football player.