Cape Town - SA tennis No 1 Kevin Anderson will on Friday return to complete the final set of his Nottingham Open quarter-final against America’s Steve Johnson.
Top seed Anderson was leading Johnson 6-7 (6/8), 7-5, 4-3 when play was halted due to darkness after two hours.
The final set is still on serve with Johnson set to restart proceedings on Friday.
According to the official ATP World Tour website, Anderson unsuccessfully served for the first set at 5-4 before losing it in a tie-break.
Anderson then forced a decider by breaking Johnson’s serve on the final point of the second set. The pair combined for 31 aces on Thursday - 21 for Anderson and 10 for Johnson.
Awaiting the winner will be seventh seed Italian Andreas Seppi, who rallied to beat Israel’s Dudi Sela 5-7, 6-4, 6-4.
In the other semi-final, Luxembourg’s Gilles Muller will take on second seed Uruguayan Pablo Cuevas, who saved a match point in beating Cypriot Marcos Baghdatis 6-4, 4-6, 7-6 (10/8).
The Nottingham Open is the players' last chance to hone their grass-court game before Wimbledon starts on Monday.