During the fag end of the day, there was a security breach at the ground as a man in an allegedly inebriated state, drove onto the pitch before being detained by the security personnel.
In the match, in response to UP's 291, Delhi could only get to 269 after resuming the day at 228 for six with overnight batsman Dhruv Shorey running out of the partner to miss out on a deserving hundred by two runs.
UP, who have had a poor start to the season, have a good chance of winning the game going into the fourth and final, considering anything close to 300 will be a daunting target on a deteriorating surface.
Nath, who scored a valuable 59 in the first innings, was the undisputed star of the day after UP both their openers Shivam Chaudhary and Almas Shaukat fell without scoring.
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Ishant had bowled Chaudhary on the first ball of the innings while Navdeep Saini sent back Shaukat, leaving UP in deep trouble at two runs for three wickets. Nath remained unbeaten in his 175-ball stay that included 14 fours and a six.
Captain Suresh Raina (16) was out cheaply again, making it 21 for four and it seemed his team had a reached a point of no return in the game.
Delhi let UP off the hook and paid the price.
Brief Scores
In Delhi: UP 291 and 224/7 in 63 overs (Akshdeep Nath batting 110, Rinku Singh 64; Ishant Sharma 3/38). Delhi 269 in 87 overs (Dhruv Shorey 98; Saurabh Kumar 4/87).
In Pune: Maharashtra 245 and 135/4 (Ruturaj Gaikwad 61, Abhimanyu Mithun 2/32). Karnataka 628/5 (Mayank Agarwal 304 no)
In Delhi: Hyderabad 474/9 decl. Railways 246 & 13/0.