Explanation:

When it comes to sports tournaments, there are different formats that can be used to determine the winner. One of these formats is the group personal basis, which is also known as the combination tournament. In this format, the teams or players are divided into groups, and they play against each other in a round-robin style. The winners of each group then advance to the next stage of the tournament.

Heading: Types of Tournaments

There are different types of sports tournaments, and they are usually classified based on the format used to determine the winner. Some of the most common formats include:

1. League Tournament: This is a tournament where all the teams or players play against each other in a round-robin format. The winner is usually determined based on the number of points accumulated over the course of the tournament.

2. Knockout Tournament: This is a tournament where the teams or players are eliminated if they lose a match. The winner is usually determined based on a single-elimination format, where the loser of each match is eliminated until there is only one winner remaining.

3. Combination Tournament: This is a tournament where the matches are played on a group personal basis. The teams or players are divided into groups, and they play against each other in a round-robin style. The winners of each group then advance to the next stage of the tournament.

Heading: Advantages of Combination Tournaments

There are several advantages of using the combination tournament format, including:

1. Equal Opportunity: In a combination tournament, all the teams or players have an equal opportunity to advance to the next stage of the tournament. This is because they all play against each other in a round-robin style, and the winners are determined based on their performance in the group stage.

2. More Matches: Combination tournaments usually involve more matches than knockout tournaments. This means that the players or teams have more opportunities to compete and improve their performance.

3. More Exciting: Combination tournaments are usually more exciting than other formats because the matches are played on a group personal basis. This means that the players or teams have to perform consistently well throughout the tournament to advance to the next stage.

In conclusion, the combination tournament format is a popular format used in sports tournaments, especially in team sports such as football and basketball. The format provides an equal opportunity for all teams or players to advance to the next stage of the tournament, and it is usually more exciting than other formats.