After the flying start provided by Virender Sehwag, who made a typically belligerent 35 in 19 balls, and Murali Vijay's 36 in 29 balls (the duo putting on 60 in 40 balls), the visitors got bogged down against Harbhajan Singh (2/20) before Bailey struck meaty blows and bailed them out with a 32-ball 61 not out, studded with three sixes and four fours.
For Mumbai Indians, Harbhajan was the most impressive bowler with 2 for 20 as he got rid of both the openers. Lasith Malinga (2/34) and debutant Jagadeesha Suchith (1/41) were the other wickets takers while Vinay Kumar was the most expensive to finish with none for 46.
Put in to bat, Kings XI raced to 46 without loss after the first five overs, with both Vijay and Sehwag, who hit six fours and a six, wading into the bowling of Vinay Kumar to cart the Karnataka pacer to all parts of the ground.
Pawan Suyal, included in the side in place of Jasprit Bumrah who did not impress in the team's lung opener against title holders Kolkata Knight Riders on April 8, kept things quiet at the other end.
Sehwag then struck Lasith Malinga, who replaced Kumar -- after the latter's expensive 3-over spell for 35 runs -- for two successive fours to help the Punjab side to race past the 50 run mark.