In the world of football, every confrontation has the potential to become a legend. However, Pep Guardiola, the tactical master, experienced an unprecedented challenge in a crucial Premier League match. The clash between Manchester City and Manchester United was not only a passionate derby but also a significant test for Guardiola's coaching career. At the Etihad Stadium, the match between Manchester City and Manchester United was filled with tension and anticipation. With Liverpool drawing in this round, City saw hope for a comeback, but failure to win would mean a barren season for Guardiola's team. In this context, Guardiola's tactical choices were particularly important. He insisted on using Walker, who was in poor form, and after Rodri's season-ending injury, tactical adjustments became even more critical. The start of the game was not smooth for City. Despite United failing to take a shot or touch the ball in the penalty area in the first 25 minutes, City's defense was breached by Gvardiol's header in the 36th minute. United only began to act after falling behind, but it wasn't until the 62nd minute of the second half that Diallo's header was saved by Ederson, marking United's first shot on target. Guardiola made a bold substitution decision in the 67th minute, replacing De Bruyne, while United's coach Amorim immediately brought on three players in an attempt to change the course of the game. United had few opportunities, and City seemed to be in control. However, just as the game was about to end, a tactical blunder by Guardiola led to disastrous consequences. In…