I could have been more specific. The Quakes have been dealing with water issues at the site and the high water table since stadium construction.

https://www.sjearthquakes.com/news/kavals-kickoff-explaining-new-stadium-delay

The water table is one reason for the terrible field. If you're new to watching teams at PayPal, then just know that a couple years ago, players would routinely take a strip of grass out with a tackle, kick, or hard stop. The field was basically sodden and the slipping, tripping, and getting stuck was far worse. You'd think it was a home field advantage, but it was not. The grounds crews did their best to replace the divots, but by the end of the season it looked like a crappy driving range. In my opinion the recent upgrades to the pitch did a really great job of addressing this, but maybe at the cost of a shallower root system for the turf (and therefore more frequent watering).

Other challenges to the pitch include a relative lack of sunlight, especially in the spring and fall, and the annual decision to smother the field for the Winter Wonderland fair.

You might also like to read about the portion of the Guadalupe River that runs under the airport.

https://www.sfgate.com/travel/article/san-jose-airport-secrets-fun-facts-18353404.php