SANTA CLARA, Calif. -- One day after the San Francisco 49ers retained their own Pro Bowl offensive lineman, they added another from the outside, signing center Alex Mack to a three-year contract.
Terms of the contract, which was announced by the team on Thursday, were not yet available. The Mack deal had been brewing since the wee hours of Wednesday morning after left tackle Trent Williams tagged Mack in an Instagram post announcing his own re-signing with the 49ers.
Long before that, however, Mack to San Francisco had been a logical connection.