Tennessee Titans left tackle Taylor Lewan has officially been suspended four games for violating NFL policy on performance-enhancing substances, the league announced Friday.

Lewan acknowledged last month that he had tested positive for the banned substance ostarine but said he would appeal the results.

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He also posted apparent polygraph results on Instagram to indicate he didn’t knowingly use a banned substance.

He became the league’s highest-paid offensive lineman last season after signing a five-year, $80 million deal that included $50 million guaranteed.

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