How do I say this in Spanish???
When talking about sports, I want to say....

They are our biggest rival because they always beat us.

How would I say this in Spanish?
thanks in advance!

Question

How do I say this in Spanish???
When talking about sports, I want to say....

They are our biggest rival because they always beat us.

How would I say this in Spanish? 
thanks in advance!

Answer

Ellos son nuestro mayor (máximo) rival porque siempre nos ganan.

Answer

Ellos son nuestros mas grandes rivales, porque siempre nos ganan

Answer

Son nuestros mayores rivales porque siempre nos ganan.

(or) nos ganan siempre ("siempre" can be in front or after the verb)

Instead of "nos ganan" you can also use: nos vencen, nos derrotan, nos superan.

Saludos desde España.

Answer

Son nuestros mayores rivales porque siempre nos ganan.

Answer

Ellos son nuestros mayores rivales porque nos ganan siempre.