The #01 Chip Ganassi has assumed early control of the 2015 Rolex 24 at Daytona after four hours of competition as the DP cars established their advantage over its P2 rivals.

Scott Dixon led initially in the #02 Chip Ganassi Ford, snatching the lead from the pole sitting MSR Ligier Honda P2 at the first corner and proceeding to hold firm for the first three hours.

With the MSR car fading as it struggled with a fuel pick up problem, the DP cars would come to the fore, the #1 Chip Ganassi Ford working its way up the order before taking the lead through with an inspired overtake at the restart, Sage Karam managing his advantage through a third caution period to lead at the four-hour mark.

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Even so, the caution periods ensure it remains relatively close up front with the top four of Karam (#01 Chip Ganassi), Max Angelleli (#5 Taylor), Christian Fittipaldi (#10Action Express) and Jamie McMurry (#02 Chip Ganassi) separated by less than 20secs.

Elsewhere, the Corvette remains on the lead lap, ahead of the MSR Ligier, which is also having problems getting heat into the tyres in the cooler than expected conditions and is now almost a lap down.

The new HPD ARX-04b runs in eighth place, a lap adrift of the leaders, having stayed largely out of trouble, unlike the sister #2 car, which pitted after just 49 laps. Similarly, the DeltaWing is out of the race after a bright start, the car working up to a high of third in the hands of a feisty Andy Meyrick before suffering a puncture and then hitting gearbox problems at the 90min mark.

In the PC class, the CORE and the JDC cars are running 1-2 and well ahead of their rivals, while a competitive GTLM class is currently headed up by the #4 Corvette, despite getting caught up in a tangle with the Park Place Porsche earlier in the race.

The #24 BMW and the #3 Corvette rounded out the top three, but the #98 Aston Martin is out of the running after losing around 50 laps with mechanical problems.