Levi's Stadium had its share of issues with turf in year one, and through the preseason this past year. They were generally fine once the regular season hit, but there are a few problems cropping up in Super Bowl 50 pre-game. A couple media tweeted about it, so I grabbed a quick screen-shot that you can see above.
They're having some turf trouble at Levi's Stadium. Groundskeepers are walking around, picking up and/or flattening chunks of grass.
— Ralph Vacchiano (@RVacchianoNYDN) February 7, 2016
As I just said on live chat, it's slippery on Levi's Stadium turf.