The reason why Ohtani is so tall is mainly the result of his strong athletic genetics.
Both of Ohtani's parents were competitive athletes and due to the strong athletic genetics Ohtani measures 6 foot 4 inches tall.
Ohtani's father, Toru, played baseball in Japan's top tier industrial leage, and his mother, Kayoko, was also a competitive badminton player.
MLB also had previously listed Ohtani at 6 foot 3 inches tall.
But, league wide accurate measuring methods were also implemented for the Automated Balls and Strikes ABS system, which confirmed the true height of Ohtani at 6 foot 4 inches tall.
Shohei Ohtani is a Japanese professional baseball designated hitter and pitcher for the Los Angeles Dodgers of Major League Baseball.
Nicknamed "Shotime", he has previously played in MLB for the Los Angeles Angels and in Nippon Professional Baseball for the Hokkaido Nippon-Ham Fighters.
Shohei Ohtani does not have a twin brother.
Shohei Ohtani has two older siblings: an older sister named Yuka and an older brother named Ryuta, who is seven years older and manages the Toyota East Japan corporate baseball team in Japan.
In an interview video that Nishikawa released, Ohtani also revealed that he takes naps as part of his training routine in MLB, which has a 162-game season.
"In Major League Baseball, many games are played consecutively.
So if I don't take naps, I won't be able to recover in time.