Sebring 12 Hours: Cadillac 1-2 at halfway stage of the race

The #5 Action Express-run Cadillac led the 65th 12 Hours of Sebring at the halfway point, running two seconds clear of the Daytona 24 Hours-winning Wayne Taylor Racing entry

Sebring 12 Hours: Cadillac 1-2 at halfway stage of the race

Neel Jani led the race from pole in his Rebellion-run Oreca, but was forced to relinquish top spot after his first pitstop when a rear airgun failed.

His woe was compounded by a drive-through penalty for a crew member being improperly attired while on fuel extinguisher duty, and a starter motor issue at the second stop meant team-mate Sebastien Buemi lost two laps.

Eric Curran inherited the lead in the #31 Action Express Cadillac, but Filipe Albuquerque in the #5 machine overtook the sister car at the start of the third hour.

Disaster then struck Curran when he drove into the back of the dawdling Nissan DPi of Johannes van Overbeek at Turn 17. He spun and couldn't restart the engine, causing the race's second full-course caution, and lost four laps in the process.

That promoted the WTR Cadillac of Alex Lynn and the Taylor brothers (Jordan and Ricky) into second, with the Oreca of JDC-Miller Motorsports in third.

The fourth-placed ESM Nissan DPi suffered a fire in the engine bay just before halfway, ruining the team's outside chances of a repeat victory from 2016.

The Rebellion Oreca - which got to within a lap of the leaders with Nick Heidfeld at the wheel - then suffered an alternator failure, taking it totally out of the equation.

Ford in control of GTLM

The GTLM pole-sitting #67 Ford GT of Ryan Briscoe/Richard Westbrook/Scott Dixon did not take up its position on the grid due to an issue getting it started. But once going, the car tore through to the front in just a couple of hours - albeit running off sequence to rivals, which complicated matters.

Sebastien Bourdais grabbed third in class in the #66 Ford from James Calado's Risi Ferrari in Hour 4, and then got ahead of Jan Magnussen's #3 Corvette in the following pitstop cycle.

The #68 Ford GT, which regularly runs in the WEC, was also well in the mix, along with the Risi Ferrari that features Giancarlo Fisichella.

An extra pitstop just before half distance dropped the #66 Ford back to sixth, while the sister cars ran 1-2.

In GTD, the pole car also suffered a drama as Tristan Vautier was forced to start his Mercedes from the back of the field following a fuel cell violation.

The class lead was fought out between the #33 Riley-run Mercedes, starring Jeroen Bleekemolen, the #63 Scuderia Corsa Ferrari and #29 Land Motorsport Audi.

Performance Tech Motorsports led the PC category, from the Starworks #8 car.

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