Suryakumar acknowledged that his "rough patch" had been going on for too long.

His 582 tour-level wins are fourth most among active players, just behind Gael Monfils, who also plans to retire at the end of next year.

South Africa began the tour with a stunning 2-0 triumph in the Test series but the white ball contests proved disappointing as they also lost the one-day series 2-1.