The minimum number of points to win a 3-set tennis match is 48, winning 6-0, 6-0. If my only goal is to win a single point, I would give myself decent odds at distracting any given pro tennis player enough for them to lose one point. Across the two sets I might even be able to get two points if I’m really lucky.
However, I don’t plan on breaking my arm by trying to return any of their shots, so even in the (still probably majority) case where I don’t even win one point, at least my embarrassment will be short and controlled.
It helps significantly that the EU already has a lot of the necessary expertise at every level.