LONDON -- Here's what to watch for at the London Olympics on Sunday:
1. Swimming: The United States, Australia and France go for gold in the final of the 4 x100m freestyle relay, a day after Michael Phelps was stunningly defeated by teammate Ryan Lochte.
2. Basketball: The U.S. men's team plays France (and NBA star Tony Parker).
3. Fans: Londoners -- and visitors -- are craving tickets for the Olympics yet many seats have been empty so far. Will organizers be able to ensure a full house even if it means giving them away?
4. A British royal: Zara Phillips took part in the eventing dressage competition. She's the daughter of Princess Anne and rode a horse called High Kingdom.
5. The hosts: Can Britain get on the podium? The country had high hopes of a medal on Saturday but fell short. Will their luck change?