Playing in his third Triple-A game, the Royals prospect went 2-for-4 with his third grand slam of the week on Friday, powering the Omaha Storm Chasers to a 10-1 rout of the Albuquerque Isotopes.
"I'm 100 percent happy," said Perez, who matched a career high with five RBIs. "I'm really happy now."
The 21-year-old catching prospect has been on fire at the plate, going 13-for-28 over his last seven games. He has smacked four homers and driven in 20 runs during that stretch.
"This is the first time [I've had a streak like this]," Perez said. "Somebody told me I had 20 RBIs in the last week. I feel good, I feel happy. Unbelievable."
After striking out and grounding out in his first two at-bats, Perez stepped to the plate in the sixth with the bases loaded and nobody out. He jumped on a 1-0 pitch from reliever Ramon Troncoso, sending it over the wall in left-center field.
"I waited for a good pitch," Perez said. "I wanted to get some runs for my team. I was seeing a lot of sliders and breaking balls. I waited for a good pitch and hit the ball hard."
Perez delivered a two-out single in the seventh, driving in his fifth run to match the career best he established a week ago in the Texas League.
After batting .283 with nine homers and 43 RBIs in 79 games for Double-A Northwest Arkansas, the native of Venezuela learned he was being promoted on Tuesday night.
"I was really happy," Perez said. "After the game, [manager Brian Poldberg] told me to come into his office and he told me that you're leaving tomorrow to go to Triple-A."
Perez said following his promotion, he's going to keep his goals simple.
"Like in Double-A, I want to play hard every day," he said.