Why more high schools are choosing artificial turf for their sports fields - Sports Venue Calculator
A cure for what's ailing the 49ers? Levi's Stadium's friendly, real grass
49ers troubled turf gets first test Sunday against Cowboys at Levi's Stadium – The Mercury News
49er-Giants recap: Levi's Stadium still has grass/turf issues - Niners Nation
49ers troubled turf gets first test Sunday against Cowboys at Levi's Stadium – The Mercury News
Kawakami: Nick Bosa's practical and powerful case against artificial turf — will NFL owners finally listen? - The Athletic
Seahawks Quandre Diggs, Ryan Neal: End turf fields in NFL
NFL players and owners are at odds over surfaces their teams play on
49ers end practice early after problems with new turf
Who Could Step In For The 49ers Injured Players On Defense? - Sactown Sports
Seahawks Quandre Diggs, Ryan Neal: End turf fields in NFL
Roger Goodell: Breaking News, Rumors & Highlights
49ers' George Kittle, Nick Bosa join NFL Twitter in calling for safer fields – NBC Sports Bay Area & California