49ers' Arik Armstead 'one of most underrated players' in NFL
NFL players and owners are at odds over surfaces their teams play on
Who Could Step In For The 49ers Injured Players On Defense
Artificial turf's toll on NFL players can't compare with grass, Deebo
How Christian McCaffrey powers 49ers with anger, authenticity
15 Things to Know about New Stadium's Natural Grass Field - Levi's
NFLPA president says 2022 season data proves natural grass is
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J.C Tretter: 'Only Natural Grass Can Level The NFL's Playing Field
Prep football: McAllister plays in memory of his brother
Rookie Nick Bosa Makes Big Impact On Improved 49ers Defense - CBS
49er-Giants recap: Levi's Stadium still has grass/turf issues