Hi all, I've just signed up for USTA membership and I'm asked to self-rate. I plan to play 4.5 doubles, but also want to cut my teeth in some 4.0 singles tournaments. If I self-rate at 4.0, can I still enter doubles tournaments at 4.5? Will I be able to play 4.0 singles and 4.5 doubles in the same tournament? Sorry if I've missed similar questions on the forum. Many thanks!