Teammate Emil Assentato less fortunate after crashing the sister car No. 69 AIM/FXDD Ferrari in practice.
Segal and the AIM Autosport team have won three times this year, and have led the points for the last four events.
Segal and AIM Autosport increase GT points lead.
A sudden downpour at Road America led race officials to cancel Friday’s qualifying session and set the field for Saturday’s race by team points.