Phelps watch (updated)

It's hard to assume an athlete will do something no one has ever done before, but Michael Phelps is making it harder to assume he won't win eight gold medals in Beijing. 

Phelps won his fourth straight gold of these Olympics (his record 10th in his career) by touching first in the 200m butterfly in world record time. If you're keeping score at home, that's four races, four golds and four world records in four days. 

The real question might be whether or not Phelps will break eight world records in winning his eight gold medals in these games.

***Update***

Phelps and the rest of the U.S. 4x200m relay team SMASHED the rest of the world tonight to take gold and set a world record by five seconds. That makes 5/5 with five world records now for Phelps.