Action Express Racing dropped from first to fourth in the closing corners of the 2018 Motul Petit Le Mans.
Cadillac, Chip Ganassi Racing and Riley Motorsports became Patron Endurance Cup champions with two hours to go at Road Atlanta.
Five WeatherTech Champinship and Patron Endurance Cup awards were secured before the halfway mark of the season-ending Petit Le Mans.
Pipo Derani earned Tequila Patron ESM one last overall pole before the title sponsor and team split up.
BMW Team RLL led no practice sessions at Road Atlanta but came out on top in GTLM qualifying.
Oliver Jarvis put Mazda Team Joest out front in another extremely close practice session at Road Atlanta.
The first major update to the Acura NSX GT3 includes bodywork updates, new turbochargers and more.
Meyer Shank Racing will field a lineup of all-female drivers in one of its Acura-powered GTD entries in 2019.
The final practice day during which ESM will carry Tequila Patron sponsorship ended with their Nissan Onroak DPis atop the timesheet.
Drivers who will race for the Prototype and GTLM championships Saturday were fastest in their respective classes during Thursday's second practice.