Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Martin Ob itník (born November 2, 1969 in Ko ice) is a former Slovak football midfielder. Ob itník is a participant of 1989 FIFA World Youth Championship. He played for Slovakia four games in 1994. 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.