I asked this question as I am admittedly an Iowa Hawkeye grad and fan. In 2002, Iowa finished off an 11-1 season up in the Metrodome, and as you would expect we probably had 30K+ fans in attendance that day. At the end of the game, a bunch of Iowa fans started to rush the field, and before long there must have been 5,000+ fans on the field at the dome. They blew a siren trying to get the fans off the field, but it obviously didn't work. Eventually, some of the drunk Iowa college kids jumped up on the goal post and took it down. To this day, I have never seen an opposing teams fanbase rush the field after the game, nevertheless take down the home teams goal post after a win. While this was a college football game (where rushing the field still happens to this day), this also happened at a professional sports arena. There was security down on the field that day, but there was nothing they could do as hundreds of fans rushed the field afte rthe game ended. I know this doesn't happen at baseball stadiums anymore (like the 70's and 80's), but I really wonder what security could do about it if all of a sudden hundreds (or even thousands) of Brewer fans rushed the Miller Park field?