India, July 10 -- No more playful dances. No more taunting social media posts. Belgium is done celebrating its victory over the host United States and hard at work on extending its World Cup run on American soil.

The Red Devils trained in the Los Angeles area on Wednesday with the memory still fresh of their 4-1 thrashing of the Americans in Seattle on Monday. After surviving a test from Senegal with a thrilling comeback and then thoroughly dominating the US in its first two knockout games, Belgium faces its toughest challenge yet against unbeaten Spain in the quarterfinals on Friday. But this tumultuous World Cup run has sparked something in this Belgian team, goalkeeper Thibaut Courtois believes.

"We gained a lot of confidence because...