Only Number 9 Javed Khan, who top scored with a 30-ball 27, saved Mumbai that ignominy.
Karnataka beat Bengal by nine wickets to record second straight win but fail to take bonus point.
40-time winners Mumbai haven’t gotten off to the perfect start to their season and are yet to win a game.
This was Karnataka’s second outright win on the trot to lead the group table with 12 points after two rounds.
Tiwary’s MRI report was normal and is expected to be back in action in two days’ time.
Shardul Thakur finished with figures of 6 for 59 to help Mumbai bowl out Railways for 242 at the Karnail Singh Stadium.
Hosts lose seven wickets for 79 runs after break on Day Three to concede follow-on to champs Karnataka.
Andhra require another 163 runs on the final day with all 10 wickets remaining to win against Kerala.
Sandeep claimed three wickets in four balls to give Punjab an all important 37-run first innings led.
Takawale stitched 107 runs with Abhijit Dey (33) for the fourth wicket from 36.5 overs to begin the repair work.
Saxena scored 118 runs off 241 balls and hit 14 boundaries in his impressive innings before he was found plumb in front
Andhra reduce Kerala to 202/7 on Day 1; Assam 133/6 after Day 1 against Jharkhand.
Rush bags five-for to put Gujarat on top against Odhisa; Haryana vs Maharashtra affected by rain.
Praveen Kumar and Ashoke Dinda were the star performers for their respective sides on the first day.
Just this September, the north Indian state was plagued by floods that took its toll on the cricketing fraternity.