Ashton Agar picked four wickets and scored a 20-ball knock of 23 during Australia's T20I loss to England on Sunday.
KL Rahul stayed in second spot while India captain Virat Kohli also stayed in 10th in the ICC T20I rankings for batsmen.
After his match-wining performance, Ashton Agar revealed that a chat with his "favourite player in the world" left a big impression on him and gave him immense confidence.
Ashton Agar took a hat-trick as Australia crushed South Africa by 107 runs in the first Twenty20 international at the Wanderers Stadium on Friday.
Ashton Agar on Sunday suffered a laceration to the bridge of his nose in Western Australia's Marsh One-Day Cup game against South Australia.
Pace spearhead Mitchell Starc is in line to return to Australia's bowling line-up with second spinner Ashton Agar unlikely to play in Thursday's final Ashes Test against England.
Agar played in both Tests against Bangladesh this year and said he was ready to take on England if he got his chance in Thursday's Sydney Test.
The left-arm spinner sustained his injury while fielding in the third ODI at Indore.
Australia, coming out of a tough two-Test series in Bangladesh that ended 1-1, are confident of doing well against an in-form India.
Shakib Al Hasan claimed five wickets to help dismiss Australia for 217 and give Bangladesh the upper hand on the second day of the opening Test on Monday.