Marcelo Mayer might be roommates with Red Sox teammate Roman Anthony, but the young infielder didn’t have any inside information before Anthony signed an eight-year extension with Boston on Wednesday.

“I was watching Narcos on the couch this morning eating a bagel and my buddy texted me about it and I opened Twitter and that’s all I saw,” Mayer told the Boston Herald’s Mac Cerullo on Wednesday . “I gave him a text, told him how proud of him I was and saw him at the field and gave him a big hug. Super happy for him and his family.”

Anthony officially crossed the t’s and dotted the i’s on a contract that will keep the 21-year-old outfielder in Boston through the 2034 season, so long as the Red Sox pick up the club option on the final year of the deal.

The contract — which features $1

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