We know that in tennis, conditional statements are not usually well-liked, but in this case, Serena Williams herself imagines how her collection of major trophies would have been if she hadn't had to face her sister Venus: "We had this rule that if we played against each other before the final, we had to win the title. I think Venus would have had a minimum of 15 Grand Slams if we hadn't faced each other. I would have had 30. I never wanted to lose, but unfortunately, I think when you lose, you learn some of the most important lessons."
This news is an automatic translation. You can read the original news, Serena Williams: "Habría ganado 30 Grand Slams si no me hubiese enfrentado a mi hermana"