"Pretty crazy," Davidson said. "I mean, I don't have any words for that yet. Those are like little kid dreams."
Next up, Davidson planned to catch an early flight Monday back to Nevada, where he's scheduled to compete that night in the Triple-A Home Run Derby.
"So I've got to get some rest and then fly over to Reno and then get warmed up for that. I'm excited about it, though. When you're in the offseason working out, you want to have a busy All-Star break. So I guess I got my wish. A little busier than I thought," he said.
Miami's Christian Yelich and Boston's Garin Cecchini each had an RBI double. Biddle, who grew up a Phillies fan in Philadelphia, earned the win with 1 1-3 shutout innings. Washington right-hander A.J. Cole came in with two runners on in the ninth and retired both batters he faced for a save.
Davidson connected off losing pitcher Michael Ynoa of the Oakland Athletics.
"I couldn't help but smile coming around third," Davidson said. "That's far beyond how I drew it up."
Chicago Cubs second baseman Arismendy Alcantara homered for the World off Red Sox right-hander Anthony Ranaudo.
Boston shortstop Xander Bogaerts, batting third in the World lineup, singled twice and scored on a sacrifice fly by 27-year-old Detroit first baseman Jordan Lennerton, the oldest player in the game.
It was the fourth consecutive victory for the United States, including last season's 17-5 rout in Kansas City behind Manny Machado, Gerrit Cole and Wil Myers.
One year later, Machado is a major league All-Star, while Cole and Myers are off to impressive starts at the big league level.
Indeed, history shows that many of the talented kids in this game aren't far off from major league success. Nineteen players from last year's Futures Game have reached the big leagues this season.
"Words can't describe how much fun it was," Syndergaard said. "It was awesome."
NOTES: The youngest player on either roster was 18-year-old World SS Carlos Correa, voted into the game by fans after he was drafted No. 1 overall last year by the Houston Astros. "The baby," he said with a smile. ... Nimmo also was voted in by fans. ... Seattle RHP Taijuan Walker wore old-school stirrups on the mound and worked a hitless second inning for the United States. He and Davidson were high school teammates in California. ... Yankees RHP Rafael DePaula struck out 19-year-old Twins OF Byron Buxton, tabbed the best prospect in the minors by Baseball America. Buxton also fanned against Royals RHP Miguel Almonte.