The word underdog is defined by Merriam-Webster as "a loser or predicted loser in a struggle or contest."
What does the word mean in the following passage? A loser or a predicted loser?
Power X was the most popular baseball team in Thailand in the 1940s. It was such a good team that it represented Thailand in the International High School Baseball Championship held in Japan. Despite being the underdogs, they performed beyond expectations. They defeated their opponents in the first five games. This was considered a miraculous achievement. However, the Japanese team soundly beat Power X by a score of 10-0, leaving the Thailand-based team in the second place.
I'd appreciate your help.