Howard Fendrich

WASHINGTON: Jim Boeheim calls this year’s Syracuse team his best defensive group ever. Hard to argue, based on the suffocating performances that put the Orange in the Final Four.

Using its trapping, shot-challenging 2-3 zone to perfect effect for 40 minutes, fourth-seeded Syracuse shut down third-seeded Marquette 55-39 in the East Regional final Saturday to earn Boeheim his first trip to the national semifinals since a freshman named Carmelo Anthony helped win the 2003 NCAA title.

“It’s a great thing,” Boeheim joked afterward. “We go once every 10 years.”

Fittingly, a matchup between schools from the soon-to-break-apart, rough-and-tumble Big East became quite a struggle on the offensive end.

Syracuse (30-9) was led by senior forward James Southerland’s 16 points.

Michael Carter-Williams, a 6-foot-6 guard who is out front in the zone, was named the regional’s top player after having 12 points, eight rebounds and six assists Saturday.

Marquette (26-9) hadn’t scored fewer than 47 points all season — and, indeed, put up 74 in a victory over Syracuse on Feb. 25.

But this time, the Golden Eagles kept turning the ball over, seeing its shots blocked or just plain missing.

It was much like what happened Thursday in the regional semifinals, when Syracuse knocked off top-seeded Indiana by limiting it to a season-low output, too.

“I don’t think we’ve played as good defensively as these last two games,” senior guard Brandon Triche said. “We held some good teams down.”

With President Barack Obama — a basketball enthusiast who picked Indiana to win the title — and NFL Rookie of the Year Robert Griffin III of the Washington Redskins sitting in the crowd, Syracuse harassed Marquette into missing 14 of its first 15 tries from beyond the 3-point arc.

All told, Marquette made only 12-of-53 shots — 23 percent — and was 3-for-24 on 3-pointers. Vander Blue, who carried Marquette to the round of eight, was held to 14 points on 3-for-15 shooting.

Its 39 points were a record low for a team in a regional final since the shot clock was introduced in 1986.

In the national semifinals at Atlanta next week, Syracuse will face the winner of today’s South Regional final between Florida and Michigan.

Last season, Syracuse fell a victory short of the Final Four, losing to Ohio State in the round of eight.

“We wanted to get over the hump,” Southerland said. “That’s what I told the guys: We’ve still got two more to go.”

The Big East is transforming radically before next season. Syracuse is heading to the Atlantic Coast Conference, while Marquette is one of seven basketball-centric schools departing the conference to form a new league that is taking the Big East name with it.

But talk about a last hurrah.

Not only is Syracuse on its way to the Final Four, but the league also could have a second representative because Louisville is in the Midwest Regional final today against Duke.

In this very same building, exactly three weeks ago, Syracuse wrapped up its final Big East regular-season schedule with a bad-as-can-be performance in a lopsided loss to Georgetown, scoring 39 points — the Orange’s tiniest total in a half-century.

Thanking fans after Saturday’s victory, Boeheim said: “I’m sure some of you were here, three weeks ago today, when it didn’t turn out so good.”

That was Syracuse’s fourth loss in a span of five games, a stumbling way to head into tournament play. Since then, though, Boeheim’s team has won seven of eight games.

“When you bounce back like that, that says a lot about your kids, your team and your character,” Boeheim said. “This is a heck of a bounceback.”

And the secret to success? Defense, naturally.

“We got the right personnel for each key position,” C.J. Fair said. “We got big long guards, we got big long forwards that can cover ground and our centers do a good job holding down the inside.”