The play earned Galvis acclaim as one of the top web gems of the night.
"I tried to run really fast where I thought the ball might go," Galvis said. "I was tracking it, and then I just threw up my glove and it fell in there."
Galvis, who has replaced the injured Chase Utley at second base, started at shortstop on Wednesday, his natural position.
"To make a play for [pitcher Cole Hamels], that made me feel good," he said. "I'm just trying to help the pitchers."
Galvis has started 33 games at second and four at shortstop. He was forced to make the switch to second after the Utley injury and is finally starting to feel at home. The 22-year-old had made just one error in 186 chances heading into Thursday and was back at second base.
"I think I'm contributing so far," the soft-spoken Galvis said. "I feel good about what I'm doing."
Galvis, who made his debut on Opening Day, has appeared in all of the Phillies' 45 games this season. He is hitting .238 but has displayed some power, with three homers and 19 RBIs.