The quarter finals, semifinals, playoff for third place and final shall be played in accordance with the knock-out system.

Art. 26 - 29 of the regulations for the FIFA U-17 World Championship New Zealand 1999 states, that if these matches end in a draw, extra time shall be played (two periods of 15 minutes each) applying the golden goal rule and, if necessary, penalty kicks taken to determine the winner.

However, since the play-off for third place will be played as a double-header, the regulations state, that if this match ends in a draw after 90 minutes, no extra time shall be played and the winner shall be determined by penalty kicks (Art. 29, 2).

For all the other knock-out matches, quarterfinals, semifinals and the final, extra time and the golden goal rule will be applied. Art. 14 of the regulations state, that if extra time must be played as the result of a draw at the end of normal playing time, it shall always consist of two periods of 15 minutes each, with an interval of five minutes at the end of normal playing time, but not between the two periods of extra time.

Should one of the teams score a goal in extra time (golden goal), the match shall immediately be terminated and the team that scores the goal declared the winner. If no goal is scored in extra time, penalty kicks shall be taken to determine the winner, in accordance with the procedure laid down by the International Football Association Board.