  A proton-proton collider with center of mass energy around 100 TeV is the
energy frontier machine that is likely to succeed the LHC. One of the primary
physics goals will be the continued exploration of weak scale naturalness. Here
we focus on the pair-production of stops that decay to a top and a neutralino.
Most of the heavy stop parameter space results in highly boosted tops,
populating kinematic regimes inaccessible at the LHC. New strategies for
boosted top-tagging are needed and a simple, detector-independent tagger can be
constructed by requiring a muon inside a jet. Assuming 20% systematic
uncertainties, this future collider can discover (exclude) stops with masses up
to 6.5 (8) TeV with 3000 fb^-1 of integrated luminosity. Studying how the
exclusion limits scale with luminosity motivates going beyond this benchmark in
order to saturate the discovery potential of the machine.
