Skipper MS Dhoni's prowess in the slog overs was on display yet again while home spinners bamboozled the DCbatsmen as CSK prevailed in the IPL battle for top spot with a thumping 80-run win.
It was Suresh Raina who struck a fighting 59 off 37 balls to prepare the road for revival following a slow start and Dhoni (unbeaten 44 off 22) provided the late flourish.
Capitals suffered a surprise batting collapse after being consistent this season. They were out of the game after losing half the batsmen by 11th over and ended up suffering their worst defeat.
South African spinner Imran Tahir (4/12) and Ravindra Jadeja (3/9) tore apart the middle order, sharing seven wickets between them.
Earlier, Raina (59) and Faf du Plessis (39) added 83 runs for the second wicket to revive the innings after Delhi Capitals bowlers produced tight spells upfront.
Chennai Super Kings, who now sit atop the table with 18 points, are now sure to end in top-2, ensuring that they will have two shots at making the summit clash.