Julio Rodríguez performs as ‘DJ Pleno’

SEATTLE — The world already knew Julio Rodríguez, the remarkably gifted baseball talent who shines with as much flair as any player in the sport.

But now, it is being introduced to the emerging alter ego of the Mariners’ center fielder — one with another captivating skill beginning to blossom.

J-Rod reintroduced himself to Seattle’s fanbase in a dramatically new way earlier this month,…