He could even turn out to be a dark horse for the presidency.

ECONOMIST: Romania

Isner beat Federer on clay in February as the U.S. defeated Switzerland in the previous round, and he is now looking to be a real dark horse as the buildup to the French Open begins.

CNN: STORY HIGHLIGHTS

However, analysts say expectations are low that Noda, who was considered a dark horse contender as prime minister, will be the man to right Japan.

CNN: Japan's new PM pledges to rebuild