Hello! THanks for the comment this is some great info for me. There is no sign that says the name of the courts. However I contend that the names 'upper' and 'lower' are actually names. You can see at the city's reservation portal the terms upper and lower - link below. But I don't believe there is a sing at the location indicating this. Thoughts? https://anc.apm.activecommunities.com/seattle/reservation/search?keyword=Jefferson%20park%20tennis&resourceType=0&equipmentQty=0