Alex Mack, Pro Bowl center, retires after 13 NFL seasons
49ers Pro Bowl C Alex Mack retires after 13 seasons
49ers' practice report: Trey Lance 'zipping it,' Aaron Banks 'transformed'
49ers pre-training camp roster primer: Position battles, projections, and questions to be answered
21 Questions: How many wins to clinch NFC East?
How the 49ers Will Replace Alex Mack if He Retires - Sports Illustrated San Francisco 49ers News, Analysis and More
49ers quarterbacks have been working through center Alex Mack's profuse sweating in training camp
49ers Center Alex Mack Reveals why he is Retiring - Sports Illustrated San Francisco 49ers News, Analysis and More
Should the 49ers have pursued another quarterback option instead of considering Philip Rivers? - Quora
Alex Katson and Josh Berg's 7 Round Mock Draft – Draft Rite
Can Trey Lance take charge? Starter at safety? 10 questions as 49ers begin OTAs - The Athletic
Biggest remaining offseason priority for each AFC team: Should Colts sign Odell Beckham Jr.?