Earlier, Punjab were bowled out for 479 in response to Tamil Nadu's first innings total of 215, built around young Shubman Gill's brilliant knock of 268 (328 balls, 29X4, 4X6).
The home side appeared on track for a huge total as Gill, resuming on his overnight score of 199, continued to bat with ease. Though he lost skipper Mandeep Singh (50) early in the day, he found an able ally in the experienced Yuvraj Singh (41, 34 balls, 8X4) and added 61 runs at a fast clip.
Yuvraj, however, was unlucky as he was run out backing up too far when Gill's straight drive was deflected off K Vignesh's hand on to the stumps to leave him stranded.
Later, Gill was involved in another useful partnership of 83 runs with Gurkeerat Mann (48).
Lanky left-arm spinner R Sai Kishore's six-wicket haul was largely responsible in restricting Punjab as he triggered a collapse after lunch.
From 462 for 5, the home team slid to 479 all out in 118.5 overs with Kishore taking the wickets of Mann and Gill, stumped by Dinesh Karthik when he stepped out for a big shot.
Tamil Nadu began the second innings in a solid manner with Mukund and N Jagadeesan batting positively, especially the latter looking for runs.
Jagadeesan hit six fours and a six before Yuvraj had him caught by wicketkeeper Abhishek Gupta for 50.
Yuvraj struck again with his slow left-arm spin as he had Baba Aparajith leg-before wicket off the very next ball.
TN captain Baba Indrajith, however, kept out the hat-trick ball.
He and Mukund played in an assured manner and also scored whenever presented with an opportunity.
With the pacemen unable to get help like the way they did on the first day, Punjab skipper Mandeep was forced to rely on the spinners (part timers Yuvraj, Gurkeerat and Abhishek Sharma), who could not make much of an impact.
Indrajith (37 batting, 66 balls, 4X4) and night watchman Sai Kishore (0 batting) ensured there were no further alarms for Tamil Nadu, which still trail by 98 runs.
Tamil Nadu 215 and 166 for 3 in 46 overs (Abhinav Mukund 74, N Jagadeesan 50) vs Punjab 479 all out in 118.5 overs (Shubman Gill 268, Mandeep Singh 50, R Sai Kishore 6 for 107).
At Thiruvananthapuram: Kerala 320 all out in 95.3 overs beat Delhi 139 in 66.2 overs and 154 all out in 41 overs (Sandeep Warrier 3 for 39, Jalaj Saxena 3 for 49) by an innings and 27 runs. Points: Kerala: 7, Delhi: 0.
At Amtar: Andhra 173 and 175 for 1 in 56 overs (C R Gnaneshwar 89 batting) vs Himachal Pradesh 460 all out (A R Kalsi 120, RR Dhawan 76).
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