There are a number of reasons why Champions League winners don't often double their opponents in the knockout stages, including the following:
1. **Opponent strength**: As the knockout rounds go deeper, the opponent's strength is also improving. In the group stage, the strong teams may win relatively easily due to the advantage of the group, but in the knockout stage, every opponent is all out and the strength should not be underestimated.
2. **Tactical Adaptation and Adjustment**: In the knockout round of the Champions League, the coaches of both sides will conduct detailed analysis and preparation according to the tactical characteristics of the opponent, and the game will also adjust the tactics in time according to the situation on the field. This tactical game makes it difficult for one side to have a clear advantage in two games in a row.
3. **Increased psychological pressure**: After entering the knockout round, every game is about promotion, and this high-pressure atmosphere may lead to a nervous or conservative psychological state of players in the game, affecting normal performance.
4. Home Advantage: In the knockout rounds of the Champions League, the first leg is usually played at the home stadium of one of the teams, with the second leg swapped venues. Home field advantage can affect the outcome of a match in many cases, and the away team may face a greater challenge on the road.
5. **Luck Factor**: Luck factors in football games should not be ignored, such as misjudgments, injuries, weather and other unpredictable factors can affect the outcome of the game.
6. Format Implications: The Champions League's format allows for a draw in the knockout round, and even if the first leg is drawn, the second leg may be decided by extra time or a penalty shootout, which increases the likelihood of not being double-killed.
7. **Fluctuating team form**: Due to the busy schedule, fatigue of travel, etc., the team's form may fluctuate, which may also affect the team's performance in the two legs.
Therefore, the fact that the Champions League winning team does not often kill their opponents in the knockout stage is due to the combination of multiple factors such as the strength of the opponent, tactical adjustments, psychological pressure, home advantage, luck factor, format characteristics and team form. #足坛规则探讨#
