Michael Phelps celebrates setting the all-time Olympic record with his 19th medal (Getty Images)
1. It's only fitting that Michael Phelps became the most decorated Olympic medal winner of all time with a gold. Phelps swam a brilliant anchor leg in the men's 20o-meter freestyle relay, taking the big lead his teammates gave him and extending it to win the 15th gold medal of his career and his 19th medal overall. That broke a tie with Russian gymnast Larissa Latynina, who won 18 medals during her career.
[Related: Larissa Latynina says she's the greatest Olympian ever]
2. Sixteen years after the U.S. women's gymnastics team's only victory at the Olympics, the Americans captured gold again in convincing fashion. They cruised to the gold medal with ease, outclassing second-place Russia by more than five points and making a strong case to be considered the strongest U.S. team ever. "I am saying that this team is the best," U.S. team director Martha Karolyi said. "Only because that  team competed in the United States."
3. Hopefully the Tunisia men's basketball team had friends in the crowd take snapshots of the scoreboard when they led Team USA 15-12 late in the first quarter because that advantage was short-lived. The U.S. seized control with a 12-0 run and steamrolled Tunisia in the second half, coasting to a 110-63 victory. The lone weakness the U.S. continues to suffer from is its 3-point shooting. Superior depth, athleticism and defensive prowess may carry the U.S. to a gold medal regardless, but the team will have a much tougher time of it if it doesn't start to knock down some outside shots.
[Photos: U.S. medal winners]
4. On the same day as Phelps won his 15th gold medal, his training partner got one of her own. U.S. swimmer Allison Schmitt convincingly won the women's 200-meter freestyle final, finishing nearly two seconds ahead of France's Camille Muffat in a time of 1:53.61. Muffat had narrowly beaten Schmitt in the 400 final on Sunday, but she could not keep pace with the American this time from the second lap on.
5. The U.S. women's soccer team was so thoroughly dominant in its 1-0 victory over North Korea on Tuesday that the story of the match wasn't the Americans clinching first place in the group. What got the most attention was the way U.S. players celebrated Abby Wambach's decisive first-half goal by forming a line facing the crowd, holding hands and wiggling their arms to create the appearance of a giant, slithering snake. Why the odd celebration? So that goalie Hope Solo could be included. Said Wambach, "She said the worm is one of the things she can contribute."
[Photos: Hope Solo]
Read More »from London Catch-up, Day 4: Michael Phelps stands alone in Olympic history