High temperatures didn't slow the field much in a variety of races in Eagle Rock, Calif.
The 23-year-old Ethiopian will have his hands full on Sunday.
Ethiopian missed last year's Olympics due to an injury.
Charles Ndirangu and Rosemary Wanjiru won the men's and women's races.
Australia's top cross-country runner will square off against Japan's best.
It will be his sixth showing at Worlds as a senior.
The elite from the "Land Down Under" make final preparations in England.
BOSTON (15-Apr) -- With temperatures comfortably rising into the 70 degree range (21C) and a slight wind blowing from the south, Morgan
American Desiree Davila will toe the line in the women's 5K.
American Bobby Curtis is a late entry.