Arturo Gatti, knocked out by Floyd Mayweather last June, comes to a crossroads Saturday night in Atlantic City, where he can still generate gridlock.

Promoters say that more than 10,000 seats have been sold at the 12,000 seat Boardwalk Hall for another look at a fighter easy on the eyes, although not necessarily his own.

Gatti has taken so many shots over 46 fights, New Jersey Boxing Commissioner Larry Hazzard ordered additional neurological tests before sanctioning this IBA welterweight championship against Thomas Damgaard.

And one of the game’s great warriors knows he must win to keep fighting as a headliner.

“If I lose this fight, what happens to me?” Gatti said yesterday.

“It would take a couple years to be back on HBO.

“I appreciate what HBO has done for me. They know going against Mayweather was a tough fight.”

Gatti has been as good to HBO as HBO has been good to him.

The network only hopes that a loss to Mayweather, probably the best pound-for-pound fighter in the world, was only that – not a message that Gatti has taken too much punishment.

Unclear is what kind of test Damgaard, an undefeated Dane of undetermined greatness, presents. He has never fought on this side of the Atlantic.

“This is the beginning of a new career for me,” said Gatti, happy to be fighting at 147 pounds, after struggling so long to make 140. “People are curious. And I’m curious, too, to see how good I am going to look.

“A lot of people want to see what I have left. And they know I am coming to give them a show.”