Ashish Reddy make sure that Ravindra Jadeja’s poor form with the bat continue as he dismissed the CSK all-rounder in the penultimate over for 4 runs off 9 balls.
Abhishek Jhunjhunwala dismissed Morkel in the fifteenth over to reduce Chennai to 124/4 in 14.6 overs soon after Du Plessis became the second victim of pacer Veer Pratap Singh in the previous over.
The in-form Du Plessis hit a six and two fours in his 35-ball knock and put on valuable 40-run stand with skipper MS Dhoni for the third wicket.
Du Plessis was involved in a crucial 64-run stand for the second wicket with Suresh Raina (32) to lead the hosts run charge in the beginning.
Amit Mishra provided Chargers a crucial break in the tenth over when he dismissed Raina to end the dangerous looking stand with du Plessis. Raina smashed two huge sixes and a four in his 24-ball quick-fire innings to revive the CSK charge after losing Murali Vijay (14) early.
Pacer Veer Pratap Singh dismissed Vijay in the third over to give Deccan Chargers an early breakthrough.
Vijay started the Chennai innings confidently as he hit couple of boundaries in his 11-ball short stay at the crease before VP Singh struck with his second ball to reduce the hosts to 15/1 in 2.2 overs.
Earlier, Chennai skipper MS Dhoni won the toss and decided to bat against Deccan on Friday.
After losing the toss, Kumar Sangakkara said that he would have batted first too.
Abhishek Jhunjhunwala and Daniel Christian are in the playing XI for Chargers.
Chennai Super Kings: Faf du Plessis, Murali Vijay, Suresh Raina, Dwayne Bravo, MS Dhoni (capt/wk), Ravindra Jadeja, Albie Morkel, Ben Hilfenhaus, Subramaniam Badrinath, Ravichandran Ashwin, Shadab Jakati.
Deccan Chargers: Parthiv Patel (wk), Shikhar Dhawan, Cameron White, Kumar Sangakkara (capt), Daniel Christian, Abhishek Jhunjhunwala, Ankit Sharma, Ashish Reddy, Amit Mishra, Dale Steyn, Veer Pratap Singh.