Former NFL team doctor addresses Jalen Hurts blood clot as QB’s season hinges on key word

David Chao was the Chargers’ team physician for 17 years while they were still in San Diego. So when studying the statement released by the Philadelphia Eagles about Jalen Hurts and his blood clot, the doctor focused on one key word that will determine whether the quarterback misses a little time or a long time.

The word that glowed in neon for Dr. Chao was “movement.”

The Eagles’ statement announcing Hurts is out for Sunday’s game against the Carolina Panthers said a follow-up ultrasound Wednesday revealed “movement in the small blood clot” the team discovered four days earlier.

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Jalen Hurts throws

Philadelphia Eagles quarterback Jalen Hurts throws during the first half of an NFL football game against the Kansas City Chiefs, Sunday, September 14, 2025, in Kansas City, Missouri. (AP Photo/Ed Zurga)

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This blood clot discovered on Saturday was described by the team as “superficial”.

“What do they mean by movement? » Dr. Chao told OutKick. “Do they mean movement because it’s spreading and it’s now a larger superficial blood clot? Or does movement mean it’s deeper and it’s a deep vein clot?

“If he has a deep vein clot, he will be out for at least several weeks.”

Dr. Chao explained that superficial clots can actually move. They can move and remain superficial.

“But if the movement means that it has become a deep vein, then it is missing in the long term, and they have not yet revealed the full breadth or depth of the news,” he added.

Jalen Hurts runs against the Buccaneers

Philadelphia Eagles quarterback Jalen Hurts (1) runs past Tampa Bay Buccaneers defensive lineman Logan Hall (90) during the second half of an NFL football game Sunday, September 28, 2025, in Tampa, Florida. (AP Photo/Chris O’Meara)

By “deep vein,” Dr. Chao means deep vein thrombosis. If Hurts suffers a deep vein thrombosis in his leg, missing a game Sunday would just be the start of a long, potentially season-ending absence.

“If it’s deep vein thrombosis, it starts to be measured in months, not weeks,” Dr. Chao said.

That’s not all. A deep vein thrombosis (DVT) clot may break loose. It can travel through the bloodstream to the lungs and block blood flow. This is called a pulmonary embolism.

“Then he would be out for the season,” Dr. Chao said.

A pulmonary embolism requires powerful anticoagulant treatment. And no doctor would allow Hurts to play while taking such medications. Why can’t a player play if he is taking strong blood thinners? The risk of bleeding.

No, a player will not experience a medical emergency from a scratch that does not stop the bleeding. But there are other bleeds that need to be taken into account.

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Philadelphia Eagles quarterback Jalen Hurts (1) is stopped with the ball during the second half of an NFL football game by Detroit Lions linebacker Jack Campbell (46) and Lions cornerback Amik Robertson (21) Sunday, Nov. 16, 2025, in Philadelphia. (AP Photo/Matt Slocum)

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“An internal organ hemorrhage would be concerning, but the big fear is, do you have a brain hemorrhage?” said Dr. Chao, founder of sports injury information site SICScore.com.

Dr. Chao said taking blood thinners does not automatically prevent Hurts from being cleared to play. The problem is the strength of the anticoagulant he might need.

It’s worth noting that the Eagles said they first discovered Hurts’ blood clot while doing an ultrasound after their flight to London on Saturday. The clot at that time was “superficial” and it was decided Hurts could play. Then the team returned to Philadelphia after the game and on Wednesday night a new ultrasound discovered the “movement” that caused the team to rule out Hurts against the Panthers.

Nick Sirianni and Jalen hurt

Philadelphia Eagles quarterback Jalen Hurts (1) discusses a play with Philadelphia Eagles head coach Nick Sirianni during the game between the Los Angeles Rams and the Philadelphia Eagles on September 21, 2025 at Lincoln Financial Field in Philadelphia, Pennsylvania. (Andy Lewis/Icon Sportswire via Getty Images)

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So, did the flight back from London make the quarterback’s condition worse?

“I hear you,” Dr. Chao said. “But it depends on what they did for the flight. If they said, ‘Oh, there’s nothing to see here, don’t worry,’ that would raise eyebrows.

“You have to understand that people with superficial DVT are sent home and sleep at night, and that lasts sometimes for eight hours. He’s not in a seat that can’t move. If they were getting him to move, they had some sort of pulsatile device on his leg, they had compression stockings on, the blood diluted it a little bit, so theft is very defensible.

“If they haven’t said anything to see here, it at least raises an eyebrow.”

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