The US Open uses a par system, assigning a target number of strokes to each hole based on its length and difficulty.
Oakmont Country Club's total par for the 18 holes is 70, providing a benchmark against which players' scores are measured.
Players compete in stroke play, aiming to complete each round with the fewest possible strokes against the par and other players.
The top 60 players after the second round advance to the final two rounds, competing for the title of US Open Champion.
