Yes, as long as either the boy or the girl meets the requirements and/or has won a spot on the team through equal competition.
E.g., if a girl wants to try out for running back on a tackle football team, she should be able to take a legal and unrestrained hit, and hang on to the ball, just like any boy trying out for that position would.
However, if a girl wants to try out for that position and the coach thinks that she’s capable of handling the challenge, then by all means she should be given the chance.
I.e., I could see giving Chyna a tryout, but not Nicole Richie.
I think this would be less of an issue if females hadn’t been discouraged and barred from participating in these types of physical activities for such a long time, and had instead been given the same opportunities and encouragement to develop whatever skills they needed to participate.
IIRC, some of today’s female Olympic gold medal swimming winners would also win gold in the Men’s competitions of about 20 years ago.