A photo of Teacher Rio giving a lecture to Sang-hyun before the ceremonial first pitch.

Sanghyun, you hold it like this, okay?

A photo of Rio and Sanghyun uploaded to AlphaDriveOne's Instagram ahead of the KTWI ceremonial first pitch!
He's such a kind teacher, teaching everything step-by-step, starting from how to catch the ball haha.
And finally, even Sanghyun looking completely bewildered and Rio looking frustrated.
That's such a cute staged shot lol. Still, Sanghyun threw the ball well!