A mixed-reality sport simulation system includes a projectile-tracking sub-system to generate projectile-tracking data when a projectile is launched by a user, a near-eye display to display mixed-reality virtual objects displayed over physical objects within a field of view of a user representing lines of sight of the user, and a controller. The controller may direct the near-eye display to display a mixed-reality environment including virtual objects within the field of view. The near-eye display may provide an unobstructed real-world view for view vectors below a selected pitch angle and at least a portion of the mixed-reality environment for view vectors above a selected pitch angle. The controller may receive projectile-tracking data in real-time from the projectile-tracking sub-system and may direct the near-eye display to display one or more virtual objects representing a trajectory of the projectile within the mixed-reality environment in real-time based on the projectile-tracking data.