could

[navi tasan]

1-We could win the match tomorrow.
2-That could happen.

Do these sentences imply that the speaker believes that the event he is talking about is unlikely?

Gratefully,
Navi.

[Rover_KE]

Is this a conversation between two people?

If so, the second speaker's tone of voice would determine his opinion of the likelihood of the win.

Your first sentence would have been a better thread title.

Rover