The tournament was conducted by the Maharashtra Badminton Association and hosted by Bombay Gymkhana.
Subramaniam was in complete control during the quarter-final match against Joshi and cruised to a 21-4, 21-7 victory, a media release said today.
Second-seed Suresh Ayyappan of Pune District had to fight hard before he managed to overcome Prashant Mukherjee of Raigad District in three games, winning 21-19, 19-21, 21-13 to book his place in the semi-finals.
In women's 50+ singles semi-finals encounter, top seed Saroj Sawant of Ratnagiri District defeated Surekha Satam of Mumbai Suburban District 21-7, 21-10 to set up a title clash with second seed Arpita Jhaveri of Greater Mumbai who scored a 21-7, 21-11 win against Balvinder Sapra of Mumbai Suburban in the second semi-final.
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Men's 50+ singles (quarter-finals): 1-Murli Subramaniam (MS) bt Avadhut Joshi (PN) 21-4 21-7; Naval Bir Kumar (GM) bt Atul Kulkarni (AUR) 17-21 21-12 21-1; Gurmeet Singh Matharu (AUR) bt Ajay Srivastava (MS) 15-21 21-18 21-9; 2-Suresh Ayyappan (PN) bt Prashant Mukherjee (BOR) 21-19 19-21 21-13.
Womens 40+ singles (R-16): Baby Pait (MS) bt Sweta Rai (MS) 21-15 18-21 21-10; Neelam Chauhan (MS) bt Sayali Parab (GM) 21-13 21-15; Archana Mehta (MS) w/o Swati Deshpande (TH); Urvashi Thapa (GM) bt Avniee Thakkarr (MS) 21-4 21-11.