Hollands & Blair have pulled out of their scheduled FA Cup Preliminary Round tie at Burgess Hill on Saturday - after players from the home club tested positive for coronavirus.
Isthmian League Burgess Hill announced on Friday night that the game would go ahead despite two players testing positive.
That comes despite other clubs, including Broadbridge Heath, withdrawing from the competition due to members of their squad testing positive.
Southern Counties East League Blair stated on Saturday morning: "Today’s FA Cup game at Burgess Hill will not go ahead today. The Blair squad won’t be travelling.
"More information to follow as and when we can comment."
Burgess Hill's statement on Friday said that they had 'deep-cleaned' their ground but did not mention what close contact the players who had tested positive have had with other members of their squad.
Burgess Hill said: "The club has issued the following statement regarding some players in the squad showing COVID-19 symptoms.
"The guidelines set out by the FA and the NHS are stringent, and it is the responsibility of the individual(s) who have received a positive test result to self-isolate and follow advice from the NHS track-and-trace system.
"The players who tested positive are now doing the above and have not/will not be involved with the club until they have completed the required self-isolation period and no longer show any symptoms.
"This does not affect our FA Cup fixture tomorrow. Our opponents, Hollands & Blair, have been notified of the situation and are happy that all guidelines have been followed correctly.
"The entire ground has been deep-cleaned – as it has been after each pre-season fixture and training session."