Mumbai Ranji team skipper Suryakumar Yadav Monday stepped down from the top spot following his team's dismal loss by an innings and 44 runs against Tamil Nadu in an away contest.
Mumbai are placed sixth in Group A with 11 points from six games so far this season; their only victory came against Uttar Pradesh which required a heroic effort from pacer and number nine batsman Shardul Thakur. They had also lost earlier against minnows Jammu and Kashmir at home.
Although he could not produce the results as captain, Yadav's form with the bat has been impressive. He has scored 485 runs at an average of 53.88, including two tons.
The Kolkata Knight Rider's (KKR) batsman was appointed captain earlier this season due to the unavailability of experienced players Zaheer Khan and Rohit Sharma.
Mumbai have two games left, against Baroda and defending champions Karnataka.
Several efforts by IANS to contact Suryakumar proved futile as his phone went unanswered.