Olympians Nick Symmonds and Duane Solomon are the favorites.
There's plenty to be excited about this year as the depth of U.S. distance running is on the rise.
America's two best 800m runners will square off over 600 meters at the Millrose Games.
The Kenyan led from wire-to-wire to become the first man in history to run under 1:41.
Matthew Centrowitz finishes fourth as the U.S. brings home another distance medal.
The 2011 World Champion appeared invincible from start to finish.
Asbel Kiprop makes it look easy in the men's 1,500 meters.
Mario Fraioli wraps up an exciting end to the first half of competition!
Men's and women's steeplechase and 5,000-meter prelims also got underway on Monday night.
Lagat appears sharp in 3000m qualifying. Written by: Sean McKeon The opening day of the 2010 IAAF World Indoor Track and Field