text: A  goal  keeper  is  just  an  extra  player  in  each  game. that's  why   ten  players  plus  a  keeper  is  eleven  which  is  an  odd  number. \n   The  ten  players  are  not  supposed  to  touch  the  ball  with  their  hands.  if  they  do  so  intentionally  they  can  get  a  red  or  yellow  card.  and  to  differentiate  the  players from  the  goalkeeper,  the  goalie  must  not  wear  the  uniform  the  other  players  are wearing.  they  should  put  on  diffrent  color,  long  or  shortsleeve.