Aaron Finch, David Warner and Steve Smith also made big strides in rankings.
Ashton Agar picked 8 wickets in 3 matches, including a fifer which had a hat-trick in it. He also gave just 68 runs in 72 balls bowled in the three matches.
It was his efforts that kept the explosive Proteas batsmen quiet in middle overs. His performances helped him jump to the 4th spot in T20I bowlers’ rankings from the no.10 spot.
His team-mate, wrist-spinner Adam Zampa, jumped one spot to No.3 after finishing with five scalps for the series. Trailing closely at their heels was South Africa's Tabraiz Shamsi at No.5 after a three-spot rise.
Steve Smith climbed up 25 spots to No.53 on the rankings after 104 runs at a strike-rate of 142.46 in the South Africa series. In six innings since his return from suspension, he has scored 250 runs at an average of 83.33 while striking at 147.92.
Here are the latest ICC T20I players’ rankings: