j league 1 Secondly, the infrastructure of the league was heavily changed in 1999. The league acquired nine clubs from the semi-professional JFL and one club from the J.League to create a two-division system. The top flight became the J.League Division 1 (J1) with 16 clubs while the J.League Division 2 (J2) was launched with ten clubs in 1999. The former second-tier Japan Football League now became the third-tier Japan Football League (J3).. bj88 thomo J League 1 áp dụng hệ thống lên xuống hạng chặt chẽ, khiến mỗi trận đấu đều quan trọng, CLB yếu phải chiến hết mình để không rớt hạng. vietjack anh 9 Also, until 2004 (with the exception of 1996 season ), the J1 season was divided into two stages. At the end of each full season, the champions from each half played a two-legged series to determine the overall season winners and runners-up. Júbilo Iwata in 2002, and Yokohama F. Marinos in 2003, won both "halves" of the respective seasons, thus eliminating the need for the playoff series. The league abolished the split-season system in 2005.