COLUMBUS, Ohio (AP) — Ohio State says Urban Meyer will retire after the Rose Bowl and assistant Ryan Day will be the next head coach.

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After seven years and a national championship at Ohio State, the 54-year-old Meyer will formally announce his departure Tuesday at a news conference.

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The university didn’t say why he was retiring, but Meyer has said he suffers from debilitating headaches caused by an arachnoid cyst in his brain.

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(Photo by Joe Robbins/Getty Images)

He was also battered this year by an offseason issue involving a now-fired assistant coach that led to Meyer’s suspension for the first three games of the season.

(Photo by Joe Robbins/Getty Images)

Meyer was 81-9 with a national championship at Ohio State after six years at Florida, where he won two national titles.

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