The two schools had already developed a fierce rivalry in football.

They've been racing each other for years and have developed a friendly rivalry.

Both sides, however, had developed a keen rivalry at senior level since 1960.

Both of these countries are no strangers to each other and have developed a very heated rivalry over the years.

Because of this, the two schools have developed an intense rivalry in baseball over the last few years.

Since then, both clubs developed a strong rivalry which has remained to date.

As a result the pair have developed a friendly rivalry.

It was another physical game between the teams, which are developing a strong rivalry.

The two quickly developed a rivalry, wrestling several times over the next few months.

Only a year apart, the sisters also developed a rivalry between themselves that would last throughout their lives.