there are only 11 in the field but there are like 16-20 players overall in each team
Many middle schools do not have soccer teams because the United States Soccer Federation and their corrosponding youth soccer leauges have travel amatuer soccer teams for players U8 through U14. Thus the school and league would be participating for players to play in their league and schools have chosen to allow leauges to have full participation.
for professional soccer, you can have 30 players as a maximum.
US Soccer players steady at 18.2 Million
although Mexican soccer/football player salary are not well known they get paid similar amounts as players in Europe. That is why many football players from Mexico do not go to Europe since their future in a stating lineup can be uncertain in Europe and they can get the same amount of cash in Mexico.
There are 16 Mexican football players in the NFL.
32 soccer teams
Yes, soccer players do get a wide variety of injuries.