Frazier went 2-for-3 with two doubles to earn one of the Under Armour Silver Spikes Awards.
Jan Hernandez, a Puerto Rican infielder, earned the other award by going 1-for-1 with three walks for the National team.
Other National team standouts included left-hander/outfielder Trey Ball (New Castle, Ind.) -- the nation's top two-way player -- who allowed two runs in his lone inning on the mound but made up for it with an RBI ground-rule double as part of the National team's two-run seventh and outfielder Matt McPhearson (Columbia, Md.), who doubled and walked.
A few players with Major League ties also impressed Saturday.
National right-hander Hunter Harvey -- son of two-time Major League All-Star Bryan Harvey -- started for the National team, allowing three runs in the second, while right-hander/first baseman Kacy Clemens -- the son of seven-time Cy Young Award winner Roger Clemens -- worked a perfect fourth inning for the National team and drew a walk in the seventh.
"Just being here is a blessing," Frazier said. "To be around the top  players in the country is something you always want to be around. The best players, it betters you being around them. It's a big event and I'm happy I got to be around them."
The event was among the last of its magnitude this summer, which Frazier said consisted of a lot of work -- but a lot of fun, as well.
"I thought over time it would wear on me a little bit," Frazier said. "It's kind of, as we say down in Loganville, 'grindmode.' Had to grind it out but I had a blast this summer. I went to plenty of events that were something I'll always remember. Overall it was a great summer."
Former Major Leaguer Billy Ripken and former player, coach and manager Larry Bowa -- both MLB Network analysts -- once again served as team managers for the game. Bowa managed the National team while Ripken skippered the American team.
Both were impressed with the talent on hand.
"The first thing that stands out for me is how big these kids are at that age, and obviously a lot of talent," Bowa said. "When you pick guys like this all over the country, these are the guys that stand out."
The 2011 game produced eight first-round picks and Ripken said there likely were plenty of future No. 1 picks on the field Saturday.
"Their size and talent is kind of off the chart," said Ripken, adding it's not often he sees high school kids hit balls 15 rows deep in a Major League park.
Indeed, Frazier hit three home runs in the first round of the Baseball Factory Home Run Derby before the game, and nearly hit one onto Waveland Ave., in another round. Frazier -- who also stole second in the opening inning -- was edged in the derby by Houma, La., outfielder Justin Williams.
Infielder Chris Rivera, from El Dorado (Calif.) High School, won the Kelly Kulina Award, named in honor of the late Baseball Factory team member and given to the player who demonstrates the most heart and enthusiasm.
With last year's Under Armour Game alumni going high in this June's Draft, this year's impressive class and the overall youth movement in Major League Baseball -- led by 21-year-old Angels center fielder Mike Trout and 19-year-old Nationals center fielder Bryce Harper -- Ripken said he wouldn't be surprised if some of Saturday's stars become that at the big league level.
"I think those two guys have paved the way, certainly now [third baseman Manny] Machado up with the Orioles at 20 years old," Ripken said. "There's no reason to think that a kid in this game, two or three years down the road at 20 or 21 is not making a big impact in the big leagues."