Alba Barragan
Professional
Regarding the kids - They supposedly haven't shown any interest in the sport thus far, so I highly doubt they'll train to become professionals and compete in Slams against their father.
I partially agree with this. Roger has said plenty of times the girls aren't into tennis, and prefer sports like skiing or snowboarding, so that rules them out. The boys seem a bit more thrilled when playing, especially Leo (whom Roger is more close to and has said is more similar to him), and Roger hasn't been as reluctant when talking about them playing tennis as he was with the girls, but they're still very young, we can't tell. Either way, there's no way I can see him playing doubles with any of them.