All-rounder Shivam Dubey's smashing hundred complemented by pacer Tushar Deshpande's late evening burst saw Mumbai gain upperhand against Railways on the second day of the Ranji Trophy group A encounter on Friday.
After Siddhesh Lad (99) missed out on a hundred, Dubey (114) struck his maiden century in only his second first-class game as Mumbai scored 411 in their first essay.
The Railways were down in the dumps at 115 for 6 with Deshpande (3/29 in 11 overs) struck a double blow with the semi-new ball.
Dubey on his part took a wicket while senior seamer Dhawal Kulkarni also got a wicket.
For Railways, their senior pro Arindam Ghosh is at the crease having crawled his way to 39 off 115 deliveries.
At the start of the day, Lad, who hit a couple of boundaries to reach into the 90's was bowled by left-arm spinner Avinash Yadav with a just a run required for his coveted three-figure mark. Lad faced 189 deliveries and hit 14 boundaries.
However left-handed Shivam played a counter-attacking knock, hitting 13 fours and four sixes in 139 balls.
He was severe on the spin troika of Harsh Tyagi (4/83), Avinash Yadav (3/99) and Madhur Khatri (0/77 in 17 overs).
Dubey shared a 56-run seventh wicket stand with skipper Kulkarni (22) and then upped the ante alongside tailenders to get his side passed 400-run mark.
He was the ninth batsman to be dismissed after Tyagi found a nick which was pouched by rival skipper Mahesh Rawat.
Nicely warmd up after his hundred, Dubey then came on as first-change bowler to remove opener Saurabh Wakaskar (22) after Deshpande and Kulkarni got rid of Nitin Bhille and PS Singh respectively.
Reduced to 62 for 4, Rawat (30) and Ghosh added 49 runs for the fifth wicket before Deshpande struck twice at the fag end of the day.
Elsewhere in Dindigul Rajat Patidar missed out on a well-deserved double century by four runs, but helped Madhya Pradesh make 393 against Tamil Nadu in Elite Group B Match.
Test spinner R Ashwin and paceman M Mohammed finished with four wickets each to help TN restrict Madhya Pradesh from posting a huge total.
The home team was zero for no loss in two overs at stumps on day two.
Resuming at the overnight score of 214 for 3, Patidar forged another useful partnership with Shubham Sharma (43) to put the team in a strong position.
However, things went awry after the exit of Sharma as they slid from 317 for 4 to 393 all out.
Shubham Sharma was snapped up by wicketkeeper N Jagadeesan off Rahil Shah's bowling following which Patidar and Yash Dubey (6) added 42 runs.
Patidar defied the Tamil Nadu bowlers like he did on Thursday.
He slammed 17 fours and a six in his 406-ball knock.
Mohammed and Ashwin took over after the exit of Patidar to engineer a collapse.
Ashwin snapped the last three wickets to fall (Avesh Khan, Ishwar Pandey and Kuldeep Sen) to finish with 4 for 85 from 38.4 overs. Mohammed ended with 4 for 98.