Looks to be the same (sold out) practice described in this locked thread.Is this an open practice where fans have to pay to get in?
Let's not let physics get in the way of a good joke. But... The pressure is lower at high altitudes, hence rarefied. You decompress when you come up from a dive,as the pressure gets greater with depth underwater. Speaking as a lapsed physicist with a side of maths...On the increasingly rare occasion I watch a WNBA game I think about the decompression our players experience in playing in the W. Up in rare air and then ... never mind.