"It was pretty cool that he did it the other day and I happened to do it today," Mountcastle told MiLB.com. "It was pretty funny. We made a joke out of it. It was cool to do that with another teammate."
After hitting 14 total of homers over the past two seasons, the Orioles' No. 4 prospect now has 11, a career-high, through 45 games with the Keys. Mountcastle, whom the Orioles selected with the 36th selection in the 2015 Draft, had his first multi-homer game on April 21, but that personal best barely lasted a month.
• Box score
Mountcastle gave Frederick an early lead with a solo blast in the first and then went back-to-back with Hays (Orioles' No. 7) in the third. The 21-year-old kept the ball in the park and settled for a single in the fifth, but in the sixth, he went deep again, making his third trot around the bases.
"I just try to hit the ball hard and do some damage," Mountcastle said. "I don't know. I just saw the ball well today and hit it."
Overall, Mountcastle has done plenty of damage at the plate and is batting .342 with multiple hits in three of his past four games. In the month of May, the 20-year-old is batting .363 with six homers and 19 RBIs through 22 games.
William Boor is a reporter for MLBPipeline.com. Follow him on Twitter at @wboor. This story was not subject to the approval of Major League Baseball or its clubs.