4

Alison Riske, No. 18

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5

Amanda Anisimova, No. 24

6

Sloane Stephens, No. 25

7

Danielle Collins, No. 29

8

Venus Williams, No. 53

9

Jennifer Brady, No. 56

10

Lauren Davis, No. 64

1

John Isner, No. 19

Here's the good news for American tennis: The field of U.S. players is unbelievably deep, with 17 women and eight men inside the Top 100.

The bad news: For the coming Tokyo 2020 Olympics, each nation is allowed to send only four singles players and two doubles teams, for men and women respectively — and six men and six women in total. Qualification is determined by the rankings on June 8, 2020, the day after Roland Garros. (Davis Cup and Fed Cup participation is also a requirement for eligibility.)

This means that, even though the singles draw has 64 players, Sloane Stephens, ranked No. 25, wouldn't make the cut if the deadline were to today. Neither would Amanda Anisimova, ranked No. 24. On the men's side, Frances Tiafoe would have the worst luck, being the No. 5 American despite a ranking of No. 47.

Here's how things break down at the end of the 2019 season. It'll certainly be something to keep an eye on as June 8 quickly approaches.

1

Serena Williams, No. 10

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2

Madison Keys, No. 13

3

Sofia Kenin, No. 14

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4

Alison Riske, No. 18

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5

Amanda Anisimova, No. 24

6

Sloane Stephens, No. 25

7

Danielle Collins, No. 29

8

Venus Williams, No. 53

9

Jennifer Brady, No. 56

10

Lauren Davis, No. 64

1

John Isner, No. 19

2

Taylor Fritz, No. 32

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3

Reilly Opelka, No. 36

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4

Sam Querrey, No. 44

5

Frances Tiafoe, No. 47

6

Tennys Sandgren, No. 68

7

Steve Johnson, No. 85

8

Tommy Paul, No. 90

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2

Taylor Fritz, No. 32

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3

Reilly Opelka, No. 36

4

Sam Querrey, No. 44

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5

Frances Tiafoe, No. 47

6

Tennys Sandgren, No. 68

7

Steve Johnson, No. 85

8

Tommy Paul, No. 90