If you paid attention with about 700 to go, Alamirew was in the lead, not letting Mo pass. With 600 to go Mo had had enough, so he surged, and Alamirew surged right with him! Eventually Alamirew cracked and faded to 7th place but at least he tried.
He and Koech looked like the only two who tried to switch something up to beat Mo. Unfortunately they needed teamwork to beat him which they didn't get.