Cleats on Shabbat

Question

You mentioned in your previous posts that ball playing and (enjoyable) exercising are permissible. However, I understand that there may be an issue with ripping grass on Shabbat. 1) Is it permissible to run on grass? 2) Is it permissible to play football on grass? 3) Is it permissible to wear cleats while running on grass? (cleats are more likely to tear grass than sneakers)