RALEIGH - Moments after Davidson's 74-70 basketball victory over Georgetown on Sunday, Stephen Curry and his mom, Sonya, shrugged their shoulders at each other, smiled and said, "What is this?"

This NCAA Tournament win left Wildcats players mobbing each other on the court and Davidson fans hugging the patrons next to them. Davidson had trailed the Hoyas, ranked No. 9 in the country, by 17 in the second half, but then Curry made a former Davidson coach look like a prophet.

The sophomore guard scored 25 of his 30 points in the second half, mixing in a flurry of drives with deep 3-point shots. It was the second straight spectacular performance for Curry, who had 40 against Gonzaga on Friday.

"I'm speechless about the kid," Davidson forward Thomas Sander said. "What else can you say? You just want the ball in his hands."

Sunday, former Davidson coach Lefty Driesell -- who led the Wildcats to their last round of 16 appearance in 1969 -- sat 60 feet from where Curry made the winning 3-pointer in Friday's 77-74 win

"Any time you have someone like Curry, you have a chance," Driesell said before the game.

Few gave Davidson (28-6) a chance after the first half. Georgetown (28-6) had punished Davidson, and the Wildcats were fortunate to only trail by 11. The Hoyas were bigger and stronger, and shot 63 percent in the game.

Davidson looked doomed, until Curry got going. He made a four-point play to start closing the gap, before Davidson coach Bob McKillop took a suggestion from assistant Matt Matheny.

Georgetown likes to slow the game down, but Matheny recommended that Davidson use a trapping, pressure defense to speed things up. The plan worked -- Georgetown scored only two points on its next 11 possessions. The 15-2 run got Davidson to within 50-48 with nine minutes left.

McKillop implored his team to have fun and to trust each other while the fans sang along to "Sweet Caroline," but it took a little more Curry charisma to make this happen.

He scored 17 points in the final seven minutes, including a scoop shot underneath a defender that gave Davidson the lead for good, 62-60, with just under four minutes left.

"Is he ever off?" Davidson forward Stephen Rossiter said of Curry. "He does something every game that makes you go 'wow.' "

Curry added one more at the end of Sunday's win. With a boisterous crowd screaming for the Wildcats on every possession, Curry added another 3-pointer between two Georgetown defenders at the top of the key.

Baskets by Andrew Lovedale and Jason Richards kept Davidson in the lead, before Curry tried to seal Davidson's 24th straight win from the free throw line.

Sonya Curry stood and swayed with all of her son's final shots. "C'mon baby, c'mon baby," she said, clasping her hands together. She flexed her arms after one make, and then prayed to herself as Curry approached the free throw line for a final attempt.

Davidson led 73-70, but after a rare Curry miss, he had to make another free throw to seal the game with nine seconds left.

The 20-year-old took a deep breath while his mom looked skyward. He then swished the final shot that allowed the Wildcats to chest bump their way to a date in Detroit on Friday against Wisconsin.

"We were a school no one knew about, and now we are going to a Sweet 16," Stephen Curry said. "This is just unbelievable."