1. What is Goals Against Average?

Goals Against Average (GAA) is a statistic used in soccer to measure a goalkeeper's performance by calculating the average number of goals they concede per 90 minutes of play.

2. How Does the Calculator Work?

The calculator uses the GAA formula:

Where:

• \( goals\_against \) — Total goals conceded by the goalkeeper
• \( minutes \) — Total minutes played by the goalkeeper

Explanation: The formula standardizes the goals conceded to a 90-minute match (the duration of a standard soccer game).

3. Importance of GAA in Soccer

Details: GAA is a key metric for evaluating goalkeepers' performance, allowing comparison between players who have played different amounts of time.

4. Using the Calculator

Tips: Enter the total goals conceded and total minutes played. Both values must be valid (goals ≥ 0, minutes > 0).

5. Frequently Asked Questions (FAQ)

Q1: What is a good GAA in soccer?
A: In professional leagues, a GAA below 1.0 is excellent, between 1.0-1.5 is good, and above 1.5 is average to poor.

Q2: How does GAA differ from save percentage?
A: GAA measures goals conceded per 90 minutes, while save percentage measures the percentage of shots on goal that are saved.

Q3: Does GAA account for team defense?
A: No, GAA is influenced by both the goalkeeper's skill and the team's overall defensive performance.

Q4: Why use 90 minutes in the calculation?
A: 90 minutes is the standard duration of a soccer match, making GAA values directly comparable to per-game statistics.

Q5: Can GAA be negative?
A: No, GAA can never be negative as both goals against and minutes played are positive values.