MCA joint secretary Nitin Dalal informed that 27-year-old Marathe, who has so far played 13 first-class matches has been included as a cover for Aditya Tare.
Mumbai, who last won the title in the 2009-10 season, last played against two-time semi finalists Services in 1965 at the Cricket Club of India's Brabourne Stadium.
Mumbai, who made the last four by getting the better of Baroda by virtue of taking a huge first innings lead in the quarter finals that ended in a draw today at the Wankhede Stadium, had requested the BCCI to be given a chance to host the semi-final.
But the BCCI stuck to its rotation policy and decided that Services would be the hosts of the game, it was learnt.
Mumbai Squad: Ajit Agarkar (Capt), Sachin Tendulkar, Wasim Jaffer, Suryakumar Yadav, Dhawal Kulkarni, Kaustubh Pawar, Abhishek Nayar, Hiken Shah, Aditya Tare, Ankit Chavan, Nikhil Patil (Junior), Javed Khan, Sushant Marathe, Shardul Thakur and Vishal Dabholkar. Coach: Sulakshan Kulkarni.