Jharkhand added 429 runs in the 87 overs they batted on the second day to finish on 458 for 7, 181 runs ahead of Saurashtra in Agartala. Jharkhand rode on centuries from Ishank Jaggi and Ishan Kishan, who struck his second consecutive ton.
Jharkhand's openers Anand Singh and Pratyush Singh added 42 runs in the morning before they slid from 71 for 0 to 82 for 3 in a five-over period. Saurabh Tiwary then scored an 88-ball 61, stringing together a fourth-wicket partnership of 136 with Jaggi, before being dismissed, having taken Jharkhand past 200.
Jaggi reached his century soon after and joined hands with Ishan Kishan to put on 153 runs, before Jaggi retired momentarily. Kishan, who scored 273 in the previous match, scored 136 off 120 balls before being bowled by Jaydev Unadkat (2 for 87). Jharkhand lost two more wickets by stumps, ending the day with Jaggi (165*) and Ashish Kumar, who was yet to get off the mark, at the crease.
In Kolkata, Vidarbha effected a Maharashtra collapse and backed it up with a strong batting performance to end the day on 141 for 1, after having collapsed for 59 on the first day.
Lalit Yadav, who finished with five wickets, dismissed overnight centurion Naushad Shaikh for 127, and then Ankit Bawne, who scored 111. Shrikant Wagh took three wickets as Maharashtra were dismissed for 332, with their last seven wickets falling for just 62 runs.
Vidarbha started strongly in their second essay, with openers Sanjay Ramaswamy (67) and Faiz Fazal (53*) putting on 141, before the former was dismissed in the last over of the day.
In Vizianagaram, 14 wickets fell as Karnataka ended the day on 78 for 0 in their second innings, leading Rajasthan by 304 runs.
The day started with Karnataka on 345 for 6 in the first innings. They added only 29 runs to be bowled out for 374, with medium-pacer TM Ul-Haq taking 5 for 82.
It was then Rajasthan's turn to collapse, as Karnataka captain Vinay Kumar , and S Aravind took four wickets each to dismiss them for 148. Siddharth Dobal top-scored with 47, but with only one significant partnership in the innings - 53 between Dobal and Rajesh Bishnoi (25) for the seventh - they folded in 54 overs with their last four falling for eight runs.
KL Rahul - pushing for a Test return - remained unbeaten on 32, while his opening partner R Samarth was not out on 46 as they took Karnataka's lead past 300.
In Hyderabad, Odisha ended the second day on 150 for 2 against Assam, trailing by 151 after bowling Assam out for 301.
Govinda Poddar was not out on 81, along with Subhranshu Senapati, who was batting on 34 in an unbroken partnership of 82 for the third wicket. That, after openers Sandeep Pattnaik (1) and Abhishek Yadav (26) were dismissed before tea.
Earlier in the day, Assam added 77 runs to their overnight score of 224 for 5, to finish on 301. Kunal Saikia, who ended the opening day on 88, scored his maiden first-class hundred, before being the last man dismissed, for 135.