THIS IS THE MOST EXCITEMENT THE US OPEN HAS SEEN IN YEARS! FANS FIGHT IN THE STANDS!

Andy Roddick lost his cool on Wednesday night en route to a second-round boot.

Thursday night, the fireworks erupted in section 187, near the top row of Arthur Ashe Stadium.

During the eighth game of the first set between No. 3 seed Novak Djokovic and Philipp Petzschner, a fight broke out in the nosebleeds.

Arnold Florendo, 37, of Great Neck, L.I., caught the fracas with a video camera, which he turned over to police.

Florendo told the Daily News that a woman slapped a younger man, who in turn pushed an elderly man down the stairs.

The elderly gentleman, who was wearing a Mets cap, was seen in a wheelchair on the concourse being questioned by a police officer.

The officer instructed the man to "get checked out."

The woman, who Florendo believed was the daughter of the elderly gentleman, and the younger man were both taken away in handcuffs by NYPD officers.

The USTA did not release any names.

Calls to the 110th Precinct, where it is believed the two are in custody, were not returned.