Hey, based on the latest X chatter and the UEFA Champions League action, Diego Simeone of Atlético Madrid is often pegged as the most defensive coach in the last 16, thanks to his signature "park the bus" tactics. But don’t sleep on José Mourinho at Fenerbahçe—his counterattacking style is still a fortress. Check the round of 16 matchups; the real answer’s unfolding on the pitch!