"Totally got it from running on the field not the sitting in the crowd or going to buy food or alcohol or toilet or if you got public transport in," read one sarcastic comment.
Another footy fan said he was in the same position, however he had no regrets - and Raynor agreed.
"Getting on the field was well worth it," he wrote.
Others termed the Covid diagnosis as "BuddyCron", to which Raynor responded with: "I'm feeling the feverrrrr".
Covid cases in NSW have been steadily increasing in the past few weeks. On Monday, three days after the game, NSW recorded 21,374 new cases, with a seven-day average of 21,029.
The Sydney Swans were also hit with a close contact scare in the days leading up to Saturday's game. The Swans had also closed their training sessions to media, to mitigate transmission risks.
On Wednesday, the team confirmed there were "one or two close contacts", meaning some players were unavailable or selection, co-captain Dane Rampe said.
"As far as I'm aware everyone's ready to go but as is the case every morning it's kind of a wait-and-see approach, particularly in Sydney at the moment," he said.
"We're doing RATs [rapid antigen tests] every morning and it seems like every couple of days there's someone who's a close contact and has to isolate for a day or two. That's been pretty consistent over the past two months."
