ANAHEIM, Calif. - Unlike the Arizona Wildcats, the Duke Blue Devils rarely trap in the post, trusting a defender rather than leaving a three-point shooter open in the name of a double-team.

Duke might make an exception in tonight's Sweet 16 matchup - "I'm not going to give away our game plan," said a smiling Mason Plumlee - but will throw a rarity, regardless, at UA forward Derrick Williams.

Mason Plumlee will start the game guarding the La Mirada, Calif., native.

Eventually, his brother Miles will take over for spurts.

It could get confusing.

Both are 6 feet 10 inches tall. Mason is a sophomore, blond with green eyes; Miles a junior, brunette with hazel eyes.

The Warsaw, Ind., natives, who attended high school in North Carolina, feel responsible for containing Williams.

"I'm big, physical, and I'm quick, and I can jump, so I feel like I can do a good job," Mason Plumlee said. "We watched enough film on him. We know what he's going to do."

The Plumlees know UA coach Sean Miller from his Xavier basketball camps - the UA coach calls them, simply, "winners" - and know better than to foul Williams.

"You really have to stay disciplined," Mason Plumlee said. "You can't really jump and try to block his shot. You've got to go straight up and keep him off the foul line."

Miles Plumlee said "at any moment it can be any of us" on Williams.

Generations of Plumlees have played hoops.

Their father, Perky, participated at Tennessee Tech, their mother, Leslie, at Purdue. Their grandfather and two uncles played collegiately, too.

Physically, the brothers are nearly identical. Off the floor, they're more individual, sharing the sense of humor but not the same television taste. Mason loves "SportsCenter," Miles video games.

It took one game this season for Miles Plumlee to fall out of the starting lineup and his little brother to star. Miles has returned to the starting lineup, however, the past five games, replacing Ryan Kelly.

"If you don't come out with a lot of energy and intensity, you're gonna get your butt kicked by the other team," Miles Plumlee said.

"But finding that balance of being relaxed in your own game but still being aggressive and intense has probably been the best thing for me."

He compared Williams to Jeff Allen, Virginia Tech's 6-7 senior forward who averages 13.4 points and 9.7 rebounds.

He scored 18 in one game against Duke but only two in an ACC tournament semifinal game against the Blue Devils.

"Powerful inside but agile enough to do stuff on the outside, knocks down open threes" Miles Plumlee said. "It's just something our whole team defense will be focused on."