After a positive test, Cameron Champ announces that he has tested negative three times.

Cameron Champ is an example of how difficult the test really is amid the PGA Tour’s attempt to overcome the coronavirus pandemic.

Champ announced on Saturday afternoon that he had tested negative for COVID-19 three times since a positive test on Tuesday forced him to withdraw from this week’s Traveler Championship.

It raises questions about whether Champ is a victim of a false positive result. CDC reports that false positive tests are rare but possible, depending on the type of test.

“After my positive test result for COVID-19, I am fortunate to say that I had three consecutive negative results in the 72 hours that immediately followed,” Champ said in a statement posted in a tweet. “I have felt great all along and have had no symptoms. I am pleased to be on my way home according to CDC guidelines. I would like to thank my team, all medical advisors and everyone at the Travelers Championship, as well as the player relations team on the PGA Tour, for their advice, care and attention during this process. A special thanks to my fiancee, our family, my partners and all of you for the outpouring of love and support that I have received this week. Stay safe and see you soon!

Champ was the second PGA Tour player to test positive, following Nick Watney’s positive test last week at RBC Heritage on Hilton Head Island. Denny McCarthy became the third player to test positive, withdrawing from the Travelers Championship on Friday.

Two-time PGA Tour winner 25-year-old Champ was in self-isolation in Cromwell, Connecticut, before being cleared after his follow-ups of negative tests.