As of Friday morning, we don't know if Arizona Cardinals quarterback Kyler Murray will play on Sunday.

Murray did not participate in the Cardinals' practices Wednesday and Thursday with a foot injury he sustained in Arizona's chaotic Week 5 loss to the Tennessee Titans. We might get some clarity later on Friday, but the Colts have operated this week as if Murray will play on Sunday at Lucas Oil Stadium.

"We're just going to keep preparing like he's going to play," defensive tackle DeForest Buckner said. "You don't know until he's ruled out."

If Murray does play, he'll present a different challenge than any other quarterback the Colts have faced this season. He's completed an efficient 68.3 percent of his passes this season, but is averaging just 6.0 yards per attempt – the fifth-lowest

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