The title of this clip is a bit of a spoiler, but you can read the story behind it here.
Uploader boranbkk writes:
"Samson Issan (Red) vs Wisanlek Ploysakda (Blue) Lumpinee Stadium - 1991 or 92. This
is an interesting bit of footage, because it shows the final moments of
Wisanlek's long and successful career. He received so much eye damage
from Samson' barrages he wasn't allowed to fight again. Samson helped
Wisanlek out by giving him 30,000 baht towards his medical costs.
Legendary Samson is also known by his original fight name Sengmuengnoi