At the halfway stage, CSK have kept the lid on the scoring after MI lost three wickets in the Powerplay overs and then Santner got the big one of Suryakumar Yadav who was looking good in the middle.
Tilak Verma and debutant Shokeen will have to put on a big fightback to take MI to a decent total.
Pretorius comes into the attack after the timeout and again all that the MI batters can manage are singles as 4 come in the over.
Jadeja continues and just three singles come in the over.