Notebook: Dennis Horner? Who's that?

So ... umm ... assuming they don’t make any additions, who is going to start for the Nets at power forward on Saturday against the Knicks?

Has to be Shelden Williams, right?

“If we don’t add anybody before Saturday, you’ll probably see maybe Dennis out there, or see us go with Petro and Brook, or maybe Damion James at 4,” coach Avery Johnson said. “There’s a lot of different ways we can go. We’ll see.”

Sometimes during press conferences, Giants coach Tom Coughlin won’t hear a person’s name during a question. He’ll always respond with, “Who?! Who’s that now?!”

The “Who’s that?!” here is Dennis. “Dennis who?!”

Dennis Horner is his name. He’s 23 years old, wears No. 40 and he’s a 6-foot-9, 230-pounder from Lindwood, N.J. who grew up an Eagles fan and went undrafted out of N.C. State.

He was called up to the Nets’ training camp roster from the team’s NBDL affiliate in Springfield. In three games, he notched double figures in scoring. He netted a career-high 20 points against Maine on Dec. 3. He also played in Belgium.

• Here’s Johnson on second-round pick Jordan Williams, five days into training camp:

“He’s making some progress, he’s working really hard -- he’s got a little bit of a ways to go. It’s pretty tough, sometimes, for rookies coming into our league and trying to adjust, and -- but I think the main thing is he’s working awfully hard, he’s spending a lot of time with our strength and conditioning coach before practice and -- but yeah, he’s working hard.”

Johnson did smile somewhere in there, leading one to believe Williams’ conditioning could be better. Granted, he is a rookie, so it’s fair to cut him some slack in that respect.

So can he do anything other than rebound?

“I think the nice thing is when he’s popped to the corner for his little 10-foot, 12-foot jump shot, he’s making that. Stretching the floor a little bit,” Johnson said. “But we’ve just got to keep him running the floor, and playing defense and understanding our concepts and he’s working awfully hard.”