MUMBAI, JUNE 15: The cricket board has not only changed the Duleep Trophy into a round-robin tournament but has also reduced the matches' duration from the present five to four days.The Schedule Summary Oct 13-17: Irani Cup at MumbaiOct 19-22: NKP Salve Challenger Trophy in South ZoneOct 26-Jan 10: Ranji Trophy zonal leagueDec 1-10: Zonal one-day leagues (at one venue)Dec 15-21: Deodhar Trophy (knock-out at one centre in Central Zone)Dec 25-31: Wills Trophy (KO) in West ZoneJan 4-Feb 6: Duleep Trophy leagueMar 8-Apr 29: Ranji Trophy Knock-out stageNov 24-Dec 27: U-22 Zonal league tournamentUnder-19 TournamentsSep 15-Nov 20: Cooch Behar Trophy (league level)Dec 1-20: Cooch Behar (KO) in West ZoneDec 25-Jan 9: Col CK Nayudu inter-zonal trophyJan 11-13: Vinoo Mankad Trophy in East ZoneJan 17-20: MA Chidambaram TrophyU-16 TournamentsNov 24-Dec 27: Vijay Merchant Trophy (league level)Jan 1-16: Vijay Merchant (KO) in East ZoneJan 25-Feb 9: Vijay Hazare Inter-Zonal (KO) in South ZoneFeb 12-14: Polly Umrigar Trophy in South ZoneFeb 18-20: Madhavrao Scindia TrophyUnder 14Oct 20-Nov 22: Zonal league tournament