Tanush Kotian's gritty unbeaten hundred laced Mumbai's 15th Irani Cup victory which was sealed by virtue of their first innings lead over Rest Of India on the fifth and final day here on Saturday. Mumbai's last Irani Cup victory came 27 years ago during the 1997-98 season and since then the domestic powerhouse appeared in eight more finals without success and the last of which was in the 2015-16 season. Mumbai, who started the final day from overnight 153 for six, declared their second innings at 329 for eight for an overall lead of 450 runs. Kotian, who scored 64 in the first innings and resumed his innings on 20, remained not out on 114 off 150 balls, hitting 10 fours and a six. Knowing the futility of chasing 451 in little over a session, the Rest of India skipper Ruturaj Gaikwad shook hands with his opposite number Ajinkya Rahane, signalling the draw and victory for Mumbai, the defending Ranji Trophy champions, at the same time. Kotian, who showed remarkable maturity to steer