Sihine vs Kipchoge, the return of the "heirs to throne" ?? (both seemed destined to be possible Bekele/Geb type runners early on, but have hit some speedbumps here and there.)
There recent 10k suggests they may be back to their form of a few years ago.
And what about Wajinuru (sp) ? does the 1/2 marathoner and great 10k runner have 5k speed too? We will see!