Re: "Serena will be a better tennis player than Venus"
I remember he said it was because Serena's technique was more compact (partly because she's less lanky). Which I interpreted as him saying that less could go wrong in her strokes.
He also said that at her best, Venus is the best.
A single flow'r he sent me, since we met./All tenderly his messenger he chose;
Deep-hearted, pure, with scented dew still wet - One perfect rose.
I knew the language of the floweret;/'My fragile leaves,' it said, 'his heart enclose.'
Love long has taken for his amulet/One perfect rose.
Why is it no one ever sent me yet/One perfect limousine, do you suppose?
Ah no, it's always just my luck to get/One perfect rose.