The No. 7 Porsche Penske is back in front after briefly conceding the lead to the No. 31 Cadillac Whelen V-Series.R, which now has 19-year-old Connor Zilisch behind the wheel.

IndyCar ace Will Power leads for Mercedes while Porsche Penske Motorsport goes 1-2 in Saturday’s first Roar Before The 24 test session at Daytona.

Acura Meyer Shank Racing topped the first day of the November IMSA Sanctioned Test at Daytona International Speedway as the red and black No. 93 Acura ARX-06 led both Friday sessions.

Cadillac Whelen and driver Jack Aitken turned in the quickest lap around Michelin Raceway Road Atlanta in the first of three practice sessions.

Porsche Penske Motorsport’s No. 6 963 topped the times again in the second Free Practice session of the 6 Hours of São Paulo weekend, this time with Kevin Estre.

IMSA has published a 27-car entry list for the Acura Grand Prix of Long Beach on April 12, the first sprint race of the WeatherTech SportsCar Championship season. The 100-minute sprint on Saturday afternoon forms part of the Long Beach GP's 50th anniversary celebrations. The entry list features 11 cars...

IMSA's three-day sanctioned test at Sebring International Raceway concluded with the No. 6 Porsche Penske Motorsport 963 setting the quickest time of the day in consecutive days.After Mathieu Jaminet led Wednesday's leaderboard in GTP, it was co-driver Matt Campbell's turn to do the same on Thursday morning. The best lap...