As his parents described how “emotional” it was to see their son make his MLB debut, Diaz drove a 97 mph fastball from deGrom over the right-field wall. At the crack of the bat, Díaz’s father began shouting “Oh! Oh! Oh! Oh!” and continued the chant as his son rounded the bases.Then he began shouting “Isan! Isan! Isan!”Marlins rookie Isan Diaz homered off Cy Young winner Jacob deGrom for his first MLB hit while his dad was being interviewed.His reaction was incredible 😄 pic.twitter.com/Wdd7wL2m4m— ESPN (@espn) August 5, 2019″Sorry,” Díaz’s father needlessly apologized before continuing the interview. “We just homered off deGrom. He’s a Cy Young winner!”Díaz, 23, came over to the Marlins in the deal that sent Christian Yelich to Milwaukee. The second baseman is considered the No. 86 prospect in baseball, according to MLB Pipeline.The scouting report touts Díaz’s power potential. It definitely showed up in his MLB debut, in a moment he — and his parents — will never forget. Marlins prospect Isan Díaz hit his first MLB home run Monday, resulting in a must-see video clip.As Díaz faced reigning National League Cy Young winner Jacob deGrom of the Mets in the sixth inning, Fox Sports happened to be interviewing his mother and father in the grandstands.