Fragen über die Beispielsätze mit, und die Definition und Benutzung von "Komazawa"

A: × Komazawa University won the Japan Inter college ekiden race four consecutive year.
✓ Komazawa University won the Japan college ekiden race for the fourth consecutive year.

× Their strong point is athletes’ depth.
✓ Their strong point is team depth.

× If one of their athletes injured, the other is able to run as fast as he does.
✓ If one of their athletes is injured, another is able to run as fast as him.

× One of manager of their rival college said that they would be the fastest team in Japan including company’s teams.
✓ The manager of one of their rival colleges said that they would be the fastest team in Japan including corporate teams.

If you want to use "inter," you can say "intercollegiate ekiden race".

If Komazawa won in the year that you're referring to and also the 3 previous years, the first sentence should be:
Komazawa University won the Japan college ekiden race for the fourth consecutive year.

If Komazawa won 4 years in a row a long time ago but not all of the most recent 4 years, the first sentence should be "Komazawa University won the Japan college ekiden race for four consecutive years," and the 2nd sentence should specify which year(s) it refers to. For example:
Each year they kept first position in seven legs out of eight.
or, if they won again this year, you might say:
In this year's win they kept first position in seven legs out of eight.