Mayank came out to bat when RCB were precariously placed, having lost four wickets with less than 100 on the board.
At the start however, Munaf did not disappoint captain Harbhajan Singh who hoped to get early wickets by exploiting a slightly greenish pitch, as he struck two crucial blows for Mumbai Indians, dismissing Gayle for just six and running out host captain Virat Kohli for three.
In his first over Lasith Malinga almost had Saurabh Tiwary caught at deep extra cover but fortunately for the batsman, the ball landed safely between two fielders.
But suddenly, the hosts were in trouble at 47 for three by the seventh over. After losing three wickets, Dilshan and AB de Villiers were involved in a 40-run partnership in 29 balls before Kieron Pollard removed the South African for 14.
In Image: Royal Challengers Bangalore batsman Mayank Agarwal plays a shot