Miami Dolphins wideout Will Fuller sat out the team’s season opener to complete a suspension that he received last year due to a failed drug test. The former Notre Dame star was set to return this week, but he’s away from the team because of a personal issue, and there is currently no timetable on when he will return.

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Dolphins head coach Brian Flores made the announcement on Friday.

Fuller, who was expected to make his debut against the Buffalo Bills in Week 2, didn’t practice on Friday, a day after he left the team’s practice facility.

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“One day at a time,” Flores told reporters during a press conference. “He has my support. Things happen. When they happen, they’re not part of normal every day, it’s a surprise from that standpoint. He’s dealing with it. We’ll support him.”

Fuller signed a one-year, $10 million deal with the Dolphins during free agency. Last season, he hauled in 53 receptions, 879 receiving yards, and eight touchdowns in 11 games, which were all career-highs.

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As of Friday, the Dolphins are expected to keep Fuller on the 53-man roster.

The Dolphins enter Sunday’s game against the Bills with a 1-0 record, after they defeated the New England Patriots to start the season.