Sources: 49ers tight end George Kittle's groin injury 'not good'
49ers injury news: George Kittle has a Grade 2 groin strain that's limiting his top-end speed; misses practice Thursday - Niners Nation
49ers' George Kittle misses practice, status for season opener uncertain
49ers' George Kittle questionable with groin strain, hopes to play
49ers playmaker set to miss first four weeks of regular season - A to Z Sports
49ers' George Kittle Uncertain for Week 1 vs. Bears with Groin Injury, News, Scores, Highlights, Stats, and Rumors
Kyle Shanahan unsure of TE George Kittle's Week 2 status
49ers News: Kyle Shanahan isn't worried about George Kittle's production - Niners Nation
49ers Star TE George Kittle, CB Ward Questionable vs. Steelers
San Francisco 49ers' George Kittle misses practice because of groin injury - ESPN
49ers' George Kittle Uncertain for Week 1 vs. Bears with Groin Injury, News, Scores, Highlights, Stats, and Rumors
49ers injury news: George Kittle has a Grade 2 groin strain that's limiting his top-end speed; misses practice Thursday - Niners Nation
Kyle Shanahan Says George Kittle Could Miss Week 1 With Injury - Sactown Sports
49ers injuries: TE George Kittle day-to-day with groin injury
49ers Week 1 practice report unchanged, George Kittle still out