Playing on astro turf really is not nice.. But with the amount of people using a small area it is expensive to maintain a field and it will still require lots of closures. I'd rather have the real grass but I understand the reality of needing astro turf to withstand the constant play a field receives in the city. I wish they would just spring for some nice maintenance. The cities baseball, and softball fields, are all in horrible horrible shape. If SF were to give them even slight attention many a tournament would be had in this beautiful city.