The unique scene all went down just before KT Wiz's game in South Korea ... when Lee Raon took the mound inside of an air-filled bag shaped like a baseball.
But, instead of the kid throwing out a pitch ... he walked his bubble to home plate, signifying the game's first throw -- and boom, that tipped off the action on the diamond!!!
Unclear how the kid was able to breathe ... but everyone sure seemed to enjoy baseball's return to the country amid the coronavirus pandemic regardless -- the little boy even got a through-the-bubble high-five from the catcher!!