Seahawks coach Pete Carroll: Levi's Stadium grass is 'lousy'
Deeper than grassroots: Playing field surfacing decisions go beyond looks
San Francisco 49ers: Notes and Quotes from Week 1 of Training Camp, News, Scores, Highlights, Stats, and Rumors
Turf is garbage. That's all. : r/49ers
49ers sparkling new Levi's Stadium sees field fail, new grass goes in – The Mercury News
Much-maligned field at Levi's Stadium gets Super Bowl makeover
49ers troubled turf gets first test Sunday against Cowboys at Levi's Stadium – The Mercury News
Philip Rivers intercepted four times as Chiefs beat Chargers in Mexico City, NFL
Prep football: McAllister plays in memory of his brother
How the risk of a lower-body injury is influenced by turf versus grass - The Athletic
A cure for what's ailing the 49ers? Levi's Stadium's friendly, real grass
49er-Giants recap: Levi's Stadium still has grass/turf issues - Niners Nation
San Francisco 49ers' turf wars continue in new Levi's Stadium - Sports Illustrated
49ers sparkling new Levi's Stadium sees field fail, new grass goes in – The Mercury News
Why 49ers Players, Coaches Prefer Grass Fields Over Turf - Sactown Sports