Olympics Day 4: Image of the day

The face of a champion.

We had no trouble picking our image of the day for Day 4 -- we knew it had to be Michael Phelps.

In this photo, the American swimmer celebrates after the men's USA 4x200m freestyle relay in the London 2012 Olympics Aquatics Center, Tuesday, July 31.

Phelps swam the last 200m of the race for the team.

The win made Phelps the most decorated athlete in the history of the Olympics, bringing his number of Olympic medals to 19.

This is also his first gold medal of the Games. - Rappler.com