The 30-year-old was 6-2, 3-0 up in his already rain-delayed final against Israel’s Itay Erenlib at the Ellis Park Tennis Stadium in Johannesburg when adverse conditions forced the match to be postponed until tomorrow.

Sithole will be confident of success when play resumes, however, as he dominated today's play.

The South African is hoping to regain the title he won in 2015.

The only matches that were completed today were the men’s singles semi-finals but they too suffered from lengthy delays and interruptions.

Stefan Olsson of Sweden caused an upset as he defeated number one seed Stephane Houdet of France 6-3, 6-3.

He will now play Rio 2016 gold medallist Gordon Reid in tomorrow's final.

The Briton, the reigning Wimbledon champion, defeated Belgium's Joachim Gerard 6-2, 6-0 to book his place in the final.

The tournament is due to finish tomorrow with the finals in all singles competitions and doubles action.

First up is due to be the men’s final between Olsson and Reid followed by the all-Dutch women’s final between Marjolein Buis and Diede de Groot.

Sithole and Erenlib will then complete their quad singles final before the doubles events bring action to a close later on.

Reid and compatriot Alfie Hewett will complete their men's doubles semi-final after leading 3-0 against the South African pairing of Evans Maripa and Alwande Skhosana before weather caused them to stop.

The event is part of the International Tennis Federation Super Series.