Recommendations for sports wear?

I want to join a trans-friendly football (soccer) team in my local area, but since I haven't started HRT yet I'm not certain about how to go about sports wear. I use silicone breasts day-to-day, but I'm sure is a common experience, they get unbelievably sweaty and aren't exactly reliable at staying in place even when I'm not doing exercise. There's also the issue of shorts and tucking not being a hugely effective strategy when doing sport. Anyone ever been in a similar boat and/or have any recommendations?