WASHINGTON D.C. - Lamar Butler dribbled out the final seconds of George Mason’s latest improbable victory, then dropped the ball and wagged eight fingers toward a TV camera.

As in, “Round of eight, here we come!”

Butler hopped and skipped to the locker room, yelling over and over: “We’re not even supposed to be here!”

Playing a short drive from George Mason’s campus, Folarin Campbell scored 16 points and the 11th-seeded Patriots used a shutdown defense to beat seventh-seeded Wichita State 63-55 Friday night in a mid-major matchup, moving within one victory of the Final Four.

“We’ve been trying to prove ourselves all year. We heard what the critics were saying — that we didn’t belong in the tournament,” senior guard Tony Skinn said. “The confidence level has risen, and we’ve gotten a chance to show the country what we’re capable of.”

Plenty, such as denying the ball to Missouri Valley Conference player of the year Paul Miller, who led the Shockers with 16 points and nine rebounds, and Wichita State’s second-leading scorer, Sean Ogirri, who had all of four points on 1-for-8 shooting.

Wichita State finished 20-for-64 on field-goal attempts, including a startling 3-for-24 on 3-pointers. The tone was set early, as George Mason broke out to a 9-0 lead and took a 35-19 edge into halftime, thanks in large part to Wichita State’s 9-for-30 shooting from the field to that point, 1-for-11 on 3s.

“As hard as I tried,” Shockers coach Mark Turgeon said, “I couldn’t get them out of that funk.”

How unexpected was George Mason’s giddy, bracket-disrupting run through the NCAA tournament? The Patriots didn’t receive a single vote in this season’s final AP Top 25 — and never had won a single game at the NCAA tournament until last week.

MEN’S NCAA TOURNAMENT RESULTS Friday’s games MINNEAPOLIS REGIONAL Florida 57, Georgetown 53 Villanova 60, Boston College 59, OT WASHINGTON D.C. REGIONAL Connecticut 98, Washington 92, OT George Mason 63, Wichita State 55

But they stunned sixth-seeded Michigan State and No. 3-seeded North Carolina, the defending national champion. George Mason’s defense was superb in those games, too, as was Campbell, a 6-foot-4 sophomore who, like the rest of the Patriots’ starting five, hails from nearby Maryland.

He averaged only 10.7 points this season, but that’s up to 17.4 in the tournament. How fitting: An unheralded player lifting an unheralded team.

“Every time we go out there,” Butler said, “we feel we have something to prove.”

Butler and Skinn added 14 points apiece for the Patriots (26-7), who will meet top-seeded Connecticut in Sunday’s Washington Regional final. UConn beat fifth-seeded Washington 98-92 in overtime in Friday night’s second game.

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So now Connecticut will have to figure out a way to dent the Patriots’ tough D. They tied for eighth in Division I this season by holding opponents under 39 percent shooting and shut down Michigan State and North Carolina for long stretches.

“They’re very well-coached. They’ve caused a lot of problems for a lot of teams,” said Wichita State’s Kyle Wilson, who scored 12 points and helped his team make the final score respectable.

But Wichita State (26-9) just couldn’t put the ball in the bucket often enough to make a real game of it.