Vasser Sullivan Racing will enter its two Lexus RC F GT3s in the upcoming Chevrolet Detroit Grand Prix, with the No. 15 car to be headlined by reigning Australian Supercars champion Chaz Mostert.

Louis Delètraz and the No. 40 Cadillac Wayne Taylor Racing V-Series.R lead an all-Cadillac front row in GTP alongside Aitken and the No. 31 Cadillac Whelen V-Series.R.

Louis Delètraz and Cadillac Wayne Taylor Racing led the second practice session at WeatherTech Raceway Laguna Seca, as they did yesterday afternoon, while Jack Hawksworth leads GTD Pro.

AO Racing had a problem going into the upcoming “throwback weekend” at Laguna Seca: How does a team with only three years of history celebrate the throwback spirit while remaining true to itself?

IMSA has published the entry list for next week’s StubHub Monterey SportsCar Championship at WeatherTech Raceway Laguna Seca. The second sprint race of the IMSA season will have 34 cars entered, all of them full-time competitors in the GTP, GTD Pro and GTD classes.

In his first weekend for JDC-Miller MotorSports, Laurin Heinrich put the black and gold No. 5 JDC-Miller MotorSports Porsche 963 at the top of the leaderboard in opening practice for the IMSA Acura Grand Prix of Long Beach.

The return of Robert Wickens to the team for the streets of Long Beach gives the Corvette squad another high-profile opportunity.

Manthey's famed 'Grello' Porsche 911 has won the Nurburgring 24 Hours seven times, now it has a Sebring 12 Hours victory win, too.

It's still a Porsche 1-2 in GTP, while the No. 27 Heart of Racing Team Aston Martin Vantage GT3 has retaken the lead in GTD.

It’s a 1-2 for Roger Penske’s Porsche factory team, with the No. 7 963 leading the sister No. 6. The gap between the two is under two seconds, and the margin to third is a reasonably comfortable seven seconds.