Forensic analysis of the UEFA Champions League fixture between Paris Saint Germain and Arsenal reveals a sustainable pricing discrepancy favoring defensive outcomes and Arsenal's resilience. Market signals indicate a clear shift towards fewer goals and a non-PSG victory. Arsenal's recent defensive solidity, marked by multiple low-scoring wins, underpins the value identified in Under 2.5 goals and Both Teams To Score No markets, alongside a slight undervaluation of their outright win probability.