The Proteas won 25 of the 40 Twenty20 Internationals (T20Is) under du Plessis. Although he quit South African captaincy in 2020, his potential to lead the side was enough to convince the RCB management to hand him the duties. He has been in fine form in the format, as playing for Chennai Super Kings (CSK) in IPL 2021, he racked up 633 runs and finished as the tournament's second-highest run-scorer, just a couple behind his CSK teammate Ruturaj Gaikwad.