San Francisco 49ers sign Pro Bowl center Alex Mack to 3-year deal - ABC7 San Francisco
49ers C Alex Mack Mulling Retirement
Tua Tagovailoa, A.J. Green, Patrick Peterson among discounted players I still believe in
2022 NFL Free Agent Rankings: Top 200 players expected to enter free agency, NFL News, Rankings and Statistics
Cal in NFL: Alex Mack to 49ers, DeSean Jackson to Rams, Tyson Alualu & Marvin Jones to Jaguars, Stephen Anderson to Chargers
San Francisco 49ers center Alex Mack retiring after 13 NFL seasons
49ers free agency: Alex Mack praises Shanahan, says playing for the 49ers is 'very enticing' - Niners Nation
Trey Lance and Jimmy Garoppolo: North Dakota State's Randy Hedberg sees a powerful 49ers QB room - The Athletic
Five 2020 offseason moves for NFC teams - Bill Barnwell predicts trades, free agency, cuts - ESPN
How much of a threat can the San Francisco 49ers be in the playoffs if they can't beat the Atlanta Falcons at home? - Quora
49ers' Mack undecided on future; defensive coordinator Ryans opts to stay put
The Cleveland Browns must overcome star center Alex Mack's injury - Sports Illustrated
Cal in NFL: Alex Mack to 49ers, DeSean Jackson to Rams, Tyson Alualu & Marvin Jones to Jaguars, Stephen Anderson to Chargers
Kyle Shanahan urges 49ers to stay motivated