Cricket is a game that requires physical agility to bat, bowl, and field. Two teams of 11 players each play at one time. A set of rules were designed for the game by ICC. These are same for both men and women players. The game begins with captains of both teams and match referee gathering for toss. The toss winning captain is allowed to elect to bat/field first. This process is same across all formats. However, the dress code and fielding restrictions vary by format. It is mandatory for players to wear all white for a Test match, and colored tees and trousers for ODI and T20. Umpires have a key role in the game as they monitor the proceedings. They decide whether the batsman is out, decide on no-ball, wide, and ensure both teams are playing according to the rules.