The hosts were struggling at 47 for three before Satish shepherded them to recovery with an unbeaten 119 off 252 balls. Manan and Shivam Sharma took two wickets each for Delhi on a day when 94 overs were bowled.
Delhi are sitting pretty at the top of the group with 31 points while Vidarbha, on 17 points, need to work a lot harder to make the quarterfinals.
Shalabh Shrivastava (50) gave good support to Satish as they shared a crucial 122-run stand for the fourth wicket. Both got together at a tough time after captain Subramaniam Badrinath perished without scoring.
Satish remained till end with the help of 10 boundaries.
Brief scores: Vidarbha 274/6 in 94 overs (Ganesh Satish 119 batting, Shalabh Shrivastava 50; Manan Sharma 2/62, Shivam Sharma 2/49).