Michael Lewis Will Start at Safety in Season-Opener

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SANTA CLARA, Calif. (AP) - Michael Lewis will start at strong safety in the San Francisco 49ers' season opener Sunday at Arizona after sustaining two concussions in the preseason.

Lewis' first concussion occurred Aug. 18 during a joint practice with Oakland at the Raiders' wine country training site in Napa. He suffered another in an exhibition game at Dallas on Aug. 29.

Coach Mike Singletary says Lewis is "good to go" following a series of tests, an MRI exam and examination by a neurologist at nearby Stanford University.

The 29-year-old Lewis, a Pro Bowl selection in 2004 while with Philadelphia, enters his eighth NFL season and third with San Francisco after ranking third on the team with 118 tackles last season.