Garcia's blast came off right-hander Josh Staumont, the Royals' No. 10 prospect, who hit as high as 97 mph with his fastball. Garcia's homer turned a 3-2 deficit into a 5-3 lead that wouldn't be relinquished.
"Their starter did a really good job of mixing up his speeds on his fastball," Garcia said. "I felt like he was taking some off, putting some on, so I was really just trying to battle with two strikes. I got a pitch up and I was able to put a good swing on it."
Garcia, 23, has already faced quite a bit of adversity since being selected by the Giants in the second round of the 2014 Draft. He had an excellent offensive season in 2015, hitting 15 homers and driving in 66 runs while slashing .264/.342/.431 combined in Class A Augusta and Class A Advanced San Jose, but he took a step back this past May for San Jose when he suffered facial fractures in a collision at home plate. He was hitting .298/.359/.369 at the time but missed two and a half months and struggled a bit after returning.
But he's healthy now and getting his timing back. His four-RBI day on Friday upped his AFL total to a team-high nine, and the homer was his first of the Fall League season.
"This whole process hasn't been easy," Garcia said. "Coming back after two and a half months to finish a season when everybody's in midseason form and I'm just trying to get my feet back under me. This feels really great to be back out here playing against this great competition. There's really nothing more that I can ask for."
The Scorpions got on the board first when third baseman Ryder Jones (Giants) hit an RBI single and advanced to second on a throwing error by Surprise right fielder Scott Heineman (Texas). Garcia followed with a fielder's choice RBI to make it 2-0.
Surprise took a short-lived 3-2 lead in the top of the fourth when Rangers No. 2 prospect Andy Ibanez reached on a throwing error by Yankees shortstop Gleyber Torres, New York's No. 2 prospect and the No. 17 prospect in baseball. Royals first baseman Ryan O'Hearn, Kansas City's No. 7 prospect, scored on the play, and Mauricio Ramos (Royals) moved to third and scored two batters later on a single by outfielder Alfredo Escalera (Royals).
That set up Garcia for his dramatic blast in the bottom of the fourth, and Scottsdale padded the lead in the bottom of the seventh when second baseman Scott Kingery (Phillies No. 13 prospect) hit a solo home run, his first of the AFL season.
Yankees third-base prospect Miguel Andjuar, who's the No. 7 prospect in that organization, worked two walks and scored two runs for Scottsdale. He's hitting .371 during the Fall League.
O'Hearn finished 3-for-5 with a run scored for Surprise to improve his season batting average to .381.
Scottsdale left fielder Michael Hermosillo (Angels) left the game in the first inning with a sprained thumb and is considered day-to-day.