'We bat really deep. So, you don't require much from MS. But his ability to keep us calm while the team is under pressure is unmatched,' said CSK's bowling coach Bravo.
Chahal, who ended up with 4/25, now has 187 wickets in 143 matches, overtaking Bravo's tally of 183 wickets.
Gayle, 42, shares the longest career in T20 cricket, spanning more than 15 years, with his teammate Dwayne Bravo, who announced his retirement before the Australia game.
Gayle and Dwayne Bravo, who had announced that he will retire from international cricket after the World Cup, were given a guard of honour by the Australian players at the end of the match.
West Indies' inconsequential match against Australia on Saturday will be Bravo's last international outing.
Both Dhoni and Bravo called for the catch and in the end the wicketkeeper made a mess of a straight forward chance for the latter.
Pollard now has 15 T20 titles, five of which has come for him while playing for Mumbai Indians. Bravo, on the other hand, has 14.
Bravo hurt his groin on Saturday in the match against Delhi Capitals and was unable to bowl his full quota of overs which had a bearing on CSK's final over defeat.
Capitals needed 17 runs off the final over and Bravo, who is very effective with his slower balls under such crunch situation, was off the field.
Dhoni would be making a return to the cricket field after a hiatus of more than a year.