Coach Marvin Lewis missed the Cincinnati Bengals' practice Tuesday for what the team called a minor health issue.
Lewis used a cart to shuttle to the practice field earlier this week, which isn't his usual routine. Special teams coach Darrin Simmons will lead the team in his absence. The Bengals said Lewis could return this week.
The Bengals open the preseason at Paul Brown Stadium on Friday against Tampa Bay.
Lewis, 58, is entering his 15th season with the Bengals and the final year on his contract. He led the Bengals to five straight playoff appearances from 2011-15, but has failed to win a playoff game, going 0-7 during his tenure. No other NFL coach has lost his first seven playoff games.
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