Substitutes in sports are typically rated differently from starters due to several factors, including the amount of playtime, consistency, impact on the game, and the role they fulfill on the team. Here’s a breakdown of why substitutes and starters are rated differently:

1. Playing Time

• Starters usually get more minutes or time on the field, which allows them to have a greater impact on the game and showcase their skills more frequently.
• Substitutes typically play fewer minutes and may come on during specific situations (e.g., to provide fresh legs, change tactics, or cover for an injury). This limited playing time can make it harder for substitutes to have the same level of influence as starters.

2. Consistency

• Starters are generally expected to perform at a high level consistently since they play most games and often face tougher competition.
• Substitutes may have more irregular involvement, which means their consistency can be harder to evaluate. They may also be evaluated based on their ability to perform under pressure, in short bursts, or in specific situations.

3. Impact on the Game

• Starters are seen as integral to the team’s overall strategy and success, and they are often relied on to set the tone of the game from the beginning.
• Substitutes, while they can be game-changers, often have a more limited scope for impacting the match. Their main job might be to maintain the team’s performance, inject energy, or shift the momentum in a different direction, which is typically considered a more specialized role.

4. Skill Level and Experience

• Starters are generally considered the team’s most skilled and experienced players, as they’ve earned their spots through performance.
• Substitutes might not be as skilled or experienced as the starters but could still be very talented. They may be younger players developing their skills or veterans who play a limited role.

5. Role on the Team

• Starters are expected to handle the bulk of the responsibility, including leadership, tactical execution, and often scoring or defending.
• Substitutes typically have specific roles like providing energy, covering for fatigued players, or offering tactical variations (e.g., switching formation, counter-attacking).

6. Rating Systems

• In many rating systems, starters are often given higher ratings because of their extended time on the field and consistent contribution.
• Substitutes might be rated lower or sometimes receive different types of ratings (e.g., cameo performance, impact off the bench) based on their brief appearances and specialized contributions.