TCU quarterback Max Duggan discovered a heart condition thanks to a coronavirus test and on Sunday was recovering after undergoing an operation to address it.

Duggan tweeted he appreciated the support he received after learning of the condition.

“I appreciate all the support I’ve received this week. Thanks to precautionary COVID-19 testing, I learned about a heart condition that I’ve had since birth. I’ve already had the necessary procedure and am on the road to recovery. Thanks for the thoughts and prayers. Go Frogs!” he wrote.

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TCU coach Gary Patterson told reporters Thursday that Duggan would be out indefinitely because of an undisclosed health condition found during the COVID-19 test, ESPN reported.

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In 2019, Duggan started in the Horned Frogs’ final 10 games. He recorded 2,077 passing yards, 15 touchdowns and 10 interceptions. He also rushed for 555 yards and six touchdowns.

The Big 12 Conference is still planning on holding a football season despite potential health risks relating to the coronavirus pandemic.

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TCU’s first game is scheduled for Sept. 12 against SMU.

TCU finished the 2019 season 5-7 and 3-6 in Big 12 Conference games. The Horned Frogs failed to make a bowl game for the first time since 2013.