Danish ace Jan Magnussen is eagerly awaiting two races this weekend as the TUDOR United SportsCar Championship heads to the oldest endurance race in North America - the Mobil 1 Twelve Hours of Sebring.

Magnussen and Corvette Racing teammates Antonio Garcia and Ryan Briscoe will be looking to record a strong points finish after a cooling problem ended their race early at the Rolex 24 at Daytona.

Their week at Sebring kicked off strongly with Garcia recording the third fastest time of the opening practice session on Thursday.

But after the checkered flag on Saturday night, Magnussen's attention to turn to the other side of the world where his son Kevin will make his Formula 1 debut in Australia for McLaren.

Both Magnussen senior and junior were championship winners in 2013 - Jan winning the American Le Mans Series GT championship with Garcia and Kevin dominating the World Series by Renault Formula Renault 3.5 championship to take the crown.

Sebring has been a happy hunting ground for both Corvette Racing and Magnussen in the past The Pratt & Miller-run team has won here at the historic Florida airfield circuit on nine occasions while the ex-Formula 1 Danish ace has three Sebring victories to his credit.