Duration The majority of adult football and all minor and under-21 matches last for 60 minutes, divided into two halves of 30 minutes, with the exception of senior inter-county games, which last for 70 minutes (two halves of 35 minutes). Draws are decided by replays or by playing 20 minutes of extra time (two halves of 10 minutes). Juniors have a half of 20 minutes or 25 minutes in some cases. Half-time intermission lasts from 5 to 15 minutes. Championship matches have a 30-minute intermission. Teams Teams consist of fifteen players (a goalkeeper, two corner backs, a full back, two wing backs, a centre back, two mid fielders, two wing forwards, a centre forward, two corner forwards and a full forward) plus up to fifteen substitutes, of which six may be used. As for younger teams or teams that do not have enough players for fifteen-a-side, it is not uncommon to play thirteen-a-side (the same positions except without the full back and the full forward). Each player is numbered 1–15, starting with the goalkeeper, who must wear a jersey colour different from that of his or her teammates. Up to 15 substitutes may be named on the team sheet, number 16 usually being the reserve goalkeeper. Positions Ball The game is played with a round leather football made of 18 stitched leather panels, with a circumference of , weighing between when dry. It may be kicked or hand passed. A hand pass is not a punch but rather a strike of the ball with the side of the closed fist, using the knuckle of the thumb. Mark In 2017, the GAA introduced the 'mark' across the board in Gaelic football. Similar to the mark in Australian rules football, a player who catches the ball from a kick-out is awarded a free kick. The rule in full states: "When a player catches the ball cleanly from a Kick-Out without it touching the ground, on or past the line nearest the Kick Out point, he shall be awarded 'a Mark' by the Referee. The player awarded a 'Mark' shall have the options of (a) Taking a free kick or (b) Playing on immediately." In comparison, the Australian rules equivalent requires the ball not to have touched the ground and for the kick to have travelled at least . In the experimental rules of 2019 a player can now also call a mark