The main US Open tennis singles events (men’s and women’s) have 7 rounds in the main draw.

Quick Scoop

For the standard US Open singles draw (128 players):

  • Round 1 – 128 players.
  • Round 2 – 64 players.
  • Round 3 – 32 players.
  • Round 4 (Round of 16) – 16 players.
  • Quarterfinals – 8 players.
  • Semifinals – 4 players.
  • Final – 2 players.

So a champion must win 7 matches in a row to take the title in the main singles event.

If you include qualifying before the main draw, there are up to 10 total stages (qualifying rounds plus the 7 main-draw rounds).

[5][1][3] [7][1][3][5] [3] [3] [1] [1] [1] [1]
Event type Typical draw size Number of rounds
Men’s & women’s singles (main draw) 128 players7 rounds
Singles including qualifying Qualifiers + 128 main-draw playersUp to 10 stages total
Men’s & women’s doubles Usually 64 teams6 rounds
Mixed doubles 32 teams5 rounds

In simple terms, when people ask “how many rounds in US Open tennis,” they almost always mean the 7 main-draw rounds in singles.

TL;DR: US Open singles = 7 rounds in the main draw (10 if you count qualifying).

Information gathered from public forums or data available on the internet and portrayed here.