Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Carlos Rafael do Amaral or simply Amaral (born 24 November 1983 in Mogi Mirim), is a Brazilian defensive midfielder who currently plays for América Mineiro. In association football, a midfielder is a position. Some midfielders play a more defensive role, while others blur the boundaries between midfielders and forwards. The number of midfielders a team uses during a match may vary, depending on the team's formation and each individual player's role. The group of midfielders in a team is called the midfield.