OutKick medical expert, Dr. David Chao, is blaming the wet conditions on the hamstring strain.
Chao, the former head physician for the San Diego Chargers, told OutKick this week that wet fields typically protect players from knee injuries because they are so slippery, preventing cleats from locking up the leg in the turf.
But the downside is those fields are more prone to causing soft tissue injuries.
Barkley gingerly walked to the Eagles' sideline and was taken into the medical tent for a preliminary exam.
After a lengthy stint in the tent, Barkley left the field and walked to the locker room for further testing. He did not appear to have a significant limp as he walked.
The Eagles announced Barkley is questionable to return.
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