Agree they are the best sister team when judged together - and seems pretty sure both will add to their win totals, although I think Nelly will emerge as the better player. She's the Serena to Jessica's Venus.
Did Korda One ever help Korda Two? The Parks are one-up on them ... from practice day at the 2015 Shoprite:
Hee Young Park and Ju Young Park practiced separately, but later The Rocket stood behind the line and watched the Pocket Rocket attempt long lag putts.
Only one person can legitimately be referred to as the "Pocket Rocket", and that would be Henri Richard, younger brother of fellow Canadiens legend and Hockey Hall of Famer Maurice. He passed away in March of last year due to complications from Alzheimer's at age 84.