Deepak Chahar (3/26) and Imran Tahir (2/23) starred with the ball as Chennai Super Kings (CSK) restricted Mumbai Indians (MI) to 149/8 in 20 overs in the final of the Indian Premier League (IPL) at the Rajiv Gandhi International Stadium here on Sunday, even as Kieron Pollard hit an unbeaten cameo (41* off 25) down the order.