49ers to sign Trent Williams to record 6-year contract, bring in Alex Mack, National Sports
49ers training camp notes: Trent Williams looks like the best player on the roster - Niners Nation
49ers news: Trent Williams says he's not retiring and will be back next year and the year after: I'm under contract until I'm 39. - Niners Nation
49ers 27, Chiefs 17: Grades
Play until 40? Retire? 49ers' Trent Williams offers new perspective
49ers' Trent Williams won't rule out retirement: 'It does get pretty grueling'
49ers OT Trent Williams raves about rookie OL Jason Poe, franchise's roster building
49ers tackle Trent Williams ready to roll after considering retirement
All-Pro Tackle Makes Definitive Decision About 49ers Retirement
Redskins Trade Trent Williams To 49ers
George Kittle laments ranking of Trent Williams on NFL Top 100 List
Niners: Trent Williams gets candid on potential retirement