Runnersworld are reporting that Mo will headline the 10k
"Mo Farah Headlines Deep 10K Friday at Prefontaine Classic
Olympic champ one of seven in field who've broken 27:00 for the distance.
Peter Gambaccini May 26, 2015 "
http://www.runnersworld.com/elite-runners/mo-farah-headlines-deep-10k-friday-at-prefontaine-classic