LONDON -- Americans Nick Symmonds and Duane Solomon won their first-round heats in the 800-meter run and world record-holder David Rudisha of Kenya also easily advanced to the semifinals.

Symmonds, of Eugene, Ore.,won his heat in 1 minute, 45.91 seconds. "I'm just glad it was an honest race so it strung out a bit. No pushing and shoving, it was a relatively smooth race," he said. "I felt pretty good, a little flat, but historically that means I should feel really good tomorrow."

Solomon, a one-time USC star, led from the start and crossed first in his heat in 1:46.05. "It was always the plan to dictate the pace and get out in front so I can shut it down when I want," he said. "I felt like I timed my season just right. Now is the perfect time for me to go out there and win."

Fellow American Khadevis Robinson faded to fifth in his heat and did not advance. He ran 1:47.17.

Rudisha, the overwhelming favorite, took his heat in 1:45.90.