49ers lose another defensive lineman as Jordan Willis joins Raiders – NBC Sports Bay Area & California
49ers LB Patrick Willis retiring after injury-shortened season – New York Daily News
Niners look to end road struggles with win at Carolina - The San Diego Union-Tribune
Patrick Willis, San Francisco 49ers defense back to being a dominating force
2017 Opponent Scouting Report: Week 5, 49ers Defense, No, Not Everyone Retired. I Think. - Stampede Blue
Patrick Willis: 49ers can return to glory by focusing on defense this offseason
San Francisco 49ers 2022 roster: Defensive end going into NFL draft
Jordan Willis tells the story behind his famous blocked punt—and why it was such a twist of fate for the 49ers
Willis finding a home on the 49ers defensive line
49ers coach Kyle Shanahan plans quarterback rotation switch in second exhibition game
Patrick Willis will definitely lend 49ers defense a hand
49ers rookies Winters, Willis set to make NFL debut in Week 2 - Sactown Sports
San Francisco 49ers 53-Man Roster Projection: Decision Time at TE, DL, and CB
49ers' Drake Jackson hopes increased bulk leads to more production - ESPN - San Francisco 49ers Blog- ESPN