22 at a time.
Each team was permitted a squad of 23 players exactly, including three goalkeepers. With 32 national teams, there were a total of 736 players in the 2014 FIFA World Cup.
You can take 23 players in your squad for the World Cup, with 3 being goalkeepers.
Since 2004, FIFA have proposed a shortlist of 35 players eligible for the World Player of the Year trophy.
There is a FIFA women's world cup and several world women leagues. So a lot.
Many players have been sent off in many FIFA World Cup tournaments.
England sent 23 players in their squad to South Africa for the 2010 World Cup.