FOCAL POINT A Seattle-based group led by Trisha Davis and Chip Asbury (top, center), and a Viennese team led by Stefan Westermann (bottom, left) both describe how kinetochores cling to growing and shrinking microtubules during mitosis. The Dam1 complex (green) tracks the dynamic tip of a microtubule (red) and can recruit the kinetochore complex Ndc80 to follow along with it. Ndc80 alone has only a weak affinity for microtubules and fails to track the polymerizing and depolymerizing end in Dam1's absence. The aurora B kinase phosphorylates Dam1 to inhibit its association with Ndc80, which could help eliminate incorrect microtubule–kinetochore attachments.