In terms of sport it can be difficult to make a judgement from an outsider position. We don’t really know the strengths or capabilities of the opponents. Generally speaking, though, from mid-teens, males are stronger than females… of course there’s some leeway with this as some women are powerful while some men can be less well built, though I believe the overlap isn’t all that great.
Due to upbringing, it doesn’t come naturally for (most) men to want to overpower a woman, and this is a good thing, though in sports this is really for the instructor to decide as there may be a valid reason to instigate this type of situation …in martial arts, for example, it’s not automatically supposed that the man would win… especially if they abide by the rules.
If, however, like CelticWarlord says, the close, personal contact may be a near occasion for sin… which I’d suspect it may be for many males, I’d suggest that you skip it. You can improve your wrestling without having female opponents.