High Quality Content by WIKIPEDIA articles! The FIFA U-17 World Cup 2007 was held in the Korea Republic between 18 August and 9 September 2007. For this event, the number of teams had been expanded from 16 to 24, with the top two of each group and the four best third-place teams advancing to the Round of 16. Also, from now on, the confederation which produced the last champion, in this case CONCACAF, had an extra spot in the qualifying rounds.