Both CLE teams were underdogs. One of them won in an upset that you should be grateful for.
An "underdog" is a person or group in a competition, usually in sports and creative works, who is popularly expected to lose. The party, team, or individual expected to win is called the favorite or top dog. In the case where an underdog wins, the outcome is an upset. An "underdog bet" is a bet on the underdog or outsider for which the odds are generally higher.
In case you want Webster's definition: a person, team, etc., that is expected to lose a contest or battle
That would be CLE in both scenarios.