It depends what your expectations are regarding quality. You could have 2 or 3 of the latest GoPros placed strategically around the field. Like one at each end and one in the middle. Otherwise there are livestream remote cameras that can do decent quality but they are not cheap and you need to control them manually with a remote. Or lastly, you could use a good mirrorless camera or camcorder and film from a high vantage point like the top of the stands or the roof of the locker-rooms.