cofavorite
noun
co·fa·vor·ite ˌkō-ˈfā-v(ə-)rət 
-ˈfā-vərt,
chiefly dialectal -ˈfā-və-ˌrīt
variants or co-favorite
plural cofavorites or co-favorites
: one of two or more competitors who are favored to win : a joint favorite
… the Canadians, who were the cofavorites for the gold, went home without a medal.
Johnette Howard
Johnette Howard
Word History
First Known Use
1922, in the meaning defined above