MIAMI GARDENS, Fla. -- Miami Dolphins tight end Darren Waller is doubtful for the team's season opener after sustaining an injury earlier this week, coach Mike McDaniel said Friday.

Waller suffered a hip strain before Wednesday's practice, McDaniel said and exacerbated it the following day. Waller did not participate at practice either day and is not expected to play Sunday against the Indianapolis Colts .

"While trying to prevent a setback, he had a setback," McDaniel said Friday. "So what does that mean? It means he's being challenged. The most eager player to play has another challenge. I know he's up for it, but I don't think he's going to play this week, which wasn't planned.

"We had already planned not to practice him anyway -- something that we didn't know if it was what it

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