Who won the US Open female?

Related questions

1. Who won men's singles US Open 2018?
2. Why is it hard to play tennis on clay?
3. Who is the oldest player to win a Grand Slam title?
4. Who won ladies singles 2018?
5. How long was Lleyton Hewitt number 1 in the world?
6. Has anyone won all Grand Slams in one year?
7. Who has won the calendar Grand Slam in tennis?
8. What is the longest 5th set in tennis?
9. Who is the greatest woman tennis player of all time?
10. Who is the winner of Grand Slam?

Tags

1. #saturday
2. #williams
3. #defeated
4. #osaka
5. #women
6. #champion
7. #history
8. #japanese
9. #evening
10. #first
11. #title
12. #player
13. #naomi
14. #singles
15. #grand
16. #become
17. #serena