Chasing 206 for a win at the the Moti Bagh Stadium, the Abhinav Mukund-led Tamil Nadu eased to their target in the second session of play and earned six points.
Karnataka, already assured of a berth in the last eight before the start of the game, finished on top of the Group with 33 points, including the one point earned in this match, while Tamil Nadu finished second with 29 points after defeating Baroda by seven wickets in the latter's backyard.
Earlier Tamil Nadu had responded with 188 to Baroda's first-innings score of 149 and then bundled out the Aditya Waghmode-led side for 245 in the second innings.
Laxmipathy Balaji (3-65) picked up three wickets while new-ball bowlers Prasanth Parameswaran (2-52) and Aswin Crist (2-44) bagged up two wickets each.
Brief Scores:
Baroda 149 and 245
Tamil Nadu 188 and 207/3 in 50.2 overs (Murali Vijay 104 not out, Dinesh Karthik 35, Vijay Shankar 26 not out; Sagar Mangalorkar (2-69)
