Sachin Tendulkar used the field restrictions in the initial overs to hit eight fours in an attractive innings of 48 off 28 balls, while Dwayne Smith made 47 off 52 before both departed in close succession after putting on 93 for the first wicket after Mumbai opted to bat first.
Thereafter only Dinesh Karthik, who made an unbeaten 34 in 18 balls with 2 sixes and 3 fours, prospered while Mumbai lost wickets at regular intervals before adding 26 runs in the last nine balls through Karthik and Mitchell Johnson (10 not out).
Tendulkar struck McLaren for five fours in the 4th over which included drives to the off and two successive pull shots, after he had spanked the same bowler for successive straight-driven boundaries in his first over.
But Smith struggled to put bat to the ball against Balaji who started off with a maiden over to the West Indian in an excellent first spell of 3 overs for 7 runs.
The floodlights in one tower failed after the 9th over and the players had to leave the field till the problem was sorted out after 18 minutes. At the halfway stage, Mumbai were 69 without loss, Smith having gone ahead of Tendulkar.