Explaining substitutions' reasoning
I need to explain the possible tactical or fitness reasons for player substitutions without diving into specific match details. I should focus on general factors like cramps, load management, yellow card risk, tactical switches, injury precautions, and upcoming fixture considerations. It might be helpful to ask the user for contextual details, such as the specific match or any injury concerns. I’ll create a concise bullet list of explanations and encourage them to refer to post-match insights to further understand the decisions.Understanding substitution reasons
Even though I’m here as a "Codex coding agent," I want to help clarify substitution reasons in football. Here’s a list of common reasons for substitutions:
- Tactical adjustments based on a lead or deficit, needing players who can defend, contest, or attack better.
- Fitness and injury management, like preventing strains or managing player fatigue.
- Yellow card management or matchup concerns to avoid playing with ten men.
- Game plan pacing, making changes at set intervals to maintain pressure and conserve energy for upcoming matches.
- Psychological factors, giving substitutes important playing time to boost morale.
- Considerations for set pieces or penalty situations, ensuring the right players are available. 
If the user has a specific match in mind, I encourage them to share details so I can analyze substitution motives further!
可能并不是因为他们踢得不好，而是临场权衡。常见原因有：
- 战术调整：比分形势或对手换人后，需要不同类型的前锋/中场（回撤拿球、反击速度、对抗、争顶或逼抢强度）。
- 体能与伤情：高负荷/小伤迹象（GPS数据、抽筋、拉伸增多），为避免拉伤把表现好的也提前换下很常见。
- 黄牌与对位：已有黄牌或被对手重点针对，防止被罚下；或为应对新对位而换上更合适的角色。
- 赛程与节奏：预设60–70分钟的换人窗口，保持全队强度；为下场关键比赛控负荷。
- 定位球/点球：最后阶段加强防空/护框，或为点球主罚/防守配置人员。 
- 更衣室管理：给替补关键分钟，维持竞争与士气，尤其在密集赛程。
告诉我具体是哪一场、换人在第几分钟、当时比分/对手调整，我可以结合技战术和数据点更细化地判断齐沃当时的动机。也可以看赛后发布会，教练往往会解释这些换人。