Playing Ball in a Park on Shabbos

Playing Ball on Shabbos 

We should utilize our time on Shabbos to increase in Torah study, and therefore playing ball and other similar pastimes are generally discouraged for adults. Poskim quote a Yerushalmi that a certain city was destroyed because its inhabitants played ball on Shabbos, demonstrating disrespect for the sanctity of Shabbos. In fact, playing ball on Shabbos outdoors poses a halachic problem, even for children, if it involves rolling the ball on the ground. According to many poskim, children may not play ball outdoors on Shabbos on a concrete floor either because of its similarity to an earthen floor—on which one may not roll a ball on Shabbos. In addition, playing ball in a park on Shabbos can also be problematic even if the park is surrounded by walls. The halachah is that one may not carry on Shabbos in an enclosed area that is larger than the shiur of beis sasayim—which is 5,000 square amos—if it was fenced in for non-residential purposes, such as gardens and orchards; the same halachah applies to parks as well.  #375?

https://halacha2go.com?number=375

Practical Halacha: One minute a day. By Horav Yosef Yeshaya Braun, shlita, Mara D'asra and member of the Badatz of Crown Heights.