C-3PO vs Isagi Yoichi: who would win?

Too close to call

C-3PO · Star Wars · Battle Droid Body

Tier
10-A, up to 9-A
Attack Potency
Athlete Level, up to Small Building Level
Speed
Peak Human
Durability
Street Level

Isagi Yoichi · Blue Lock · Base

Tier
10-A
Attack Potency
Athlete Level
Speed
Athletic Human
Durability
Street Level

A heuristic estimate from normalized VS Battles Wiki stats: tier, attack potency, speed and durability.