Liverpool's strong performance in the Premier League this season has actually exceeded fan expectations. Last season, the team collapsed in the final stages of the title race, coupled with Klopp's departure, and Slot was not favored when he took office. However, at this point in the season, Liverpool has become the top-ranked team in the Premier League, with a very obvious points advantage. The key to achieving such results is also very important for Slot's use of the substitute lineup, and the depth of the lineup gives Slot a clear advantage in tactical adjustments. In multiple cases where Liverpool trailed this season, they changed the situation on the field through substitutions. Both Nunez and Jota have performed at the level of substitute trump cards. Liverpool, which was once thought to lack depth in the squad, has now become the envy of other teams, especially in the midfield and frontcourt, where Slot still has many options. Under the fixed starting lineup on the front line, the competitiveness of the team can be enhanced through different lineup combinations, and the different styles of several players also increase the changes in tactics. The reasons for this situation are mainly composed of several aspects. First, the internal potential tapping and growth of young players within the Liverpool team. The growth of Hrafnberg allows Liverpool to have stable midfield defense, and Endo also brings more choices to Slot. Although Quansha's performance is not stable enough, he can still bring rotation options to the team when he comes out at the last time, plus Bradley and…