There are several synonyms that can be used in place of "unexpected winners." These include "underdogs," "dark horses," "surprise champions," and "unlikely victors." All of these terms describe individuals or teams who were not favored to come out on top but managed to exceed expectations and emerge as winners. These synonyms are commonly used in sports, but they can also be applied to other contexts, such as business, politics, and entertainment. Regardless of the setting, unexpected winners or their synonyms demonstrate the power of perseverance, determination, and the ability to overcome adversity.