NBA

MARCUS SEES JOB FIGHT

Marcus Williams will not go down without a fight.

Williams, 22, the Nets’ third-season point guard and backup to Devin Harris, knows his position became very tenuous when Keyon Dooling entered the equation. The Nets, possibly as soon as today, are expected to finalize a deal to bring Dooling to New Jersey from Orlando as a combo guard to back up both spots.

“What I was always told is the best guy plays,” Williams said from Salt Lake City, where the Nets begin play today in the Rocky Mountain Revue. “Personally, I’ve just got to go out there and work hard and play my hardest and just let Coach [Lawrence Frank] make the decision.”

But the former UConn star, who has heard his name in trade rumors for some time, said the situation is spurring him to fight even harder for his job.

“I think you have to play with a chip on your shoulder now to prove you deserve minutes on a team like we have,” said Williams, whose second season last year started with major disappointment – he learned the day before training camp began he had a broken foot.

Williams believes there are enough minutes to go around – especially with Dooling serving as a backup to Vince Carter at shooting guard as well. But entering the final guaranteed year of his contract after a two-season run of 6.4 points and 3.0 assists, Williams tells himself Dooling is here to take his job.

“I would say to motivate myself, ‘They went and got Dooling to play backup point guard.’ That will motivate me to go out and play harder,” Williams said. “Keyon Dooling is a great, successful player. He’s a vet and he plays hard. I’m going to have to match his intensity, Devin’s and whoever I’m playing against.”

Williams is excited about the up-tempo style that will rely on penetration and kickouts to shooters.

“That’s more my style from high school: ‘Push the ball, get a quick pick and roll.’ It’s more of a controlled, haywire offense. If you have nothing, kick it and I think that’s to my advantage. I’m more anxious to play this year because I’m not injured. I’m ready.”

And ready to fight for his job.

fred.kerber@nypost.com