As a Brazilian-born data analyst with a London University degree, I’ve seen countless transfers come down to this single moment: Wirtz, the elusive South American defender, is undergoing his final medical checks at Liverpool. This isn’t just routine—it’s a high-stakes algorithm of human potential. Every heartbeat in these tests is coded in biomechanics and metabolic resilience. Let me explain why this isn’t football—it’s forensic sport science dressed in samba rhythm.