win the championship 夺冠
She seems set fair to win the championship.
win the game
另外，战胜某人可以说：win over sb.
所以，夺冠又可以表达为：clinch the champion.
Mike Bryan talked about getting the chance to clinch the champion.
He carried off champion easily in the competition.
bear the palm
palm棕榈叶在西方被看做胜利的象征，古罗马以棕榈枝奖赏胜利的斗士，后来bear the palm就变成了“获胜”之意。
She bore the palm in the Olympic Games held in Sydney.
An upset in a competition is a situation in which a person or team beats the person or team that was expected to win.
I just heard that Japan upset China in table tennis mixed doubles.
The favorite in a race or contest is the competitor that is expected to win. In a team game, the team that is expected to win is referred to as the favorites.
The Chinese team is considered one of the favorites in next month's games.
a person, team , country , etc. that is thought to be in a weaker position than others and therefore not likely to be successful, win a competition , etc.
Before the game, he was definitely the underdog, but he finally beat the favorite.