A four-horse race is emerging for the 2015 Rolex 24 at Daytona as dawn broke across Florida, with the Chip Ganassi Fords and the Wayne Taylor Corvette continuing to trade places out front.

Various caution periods over the evening have kept the leading trio on the lead lap and in one another's company, despite both Chip Ganassi Fords suffering with their own time consuming issues earlier in the race.

As the race entered its 17th hour, Tony Kanaan leads in the #02 machine, half a minute up on team-mate Joey Hand in the sister #01 Ganassi Ford. Despite being unable to stretch its lead, the Wayne Taylor Corvette has otherwise been a constant at the front since the fifth hour and remains well in the hunt for victory.

Related Articles

Behind them, the Action Express Corvette of Joao Barbosa, Christian Fittiipaldi and Sebastien Bourdais remains in the mix. The car lost three laps due to fuel sensor issues but has recovered two of those laps and is poised to get itself back on the lead lap before the late sprint to the flag.

The VisitFlorida.com Corvette had run on the lead lap for a time but is now three laps adrift, as is the MSR Ligier which had been battling for the lead at its peak but has now been cast adrift from the battle after suffering damage from contact. Just six Prototype entries remain relatively in the hunt.

The GTLM class continues to entertain, with the Corvettes holding firm our front from the Falken Porsche and the factory BMW. Victory here seems likely to come from one of these four teams after both North American factory Porsches fell back after colliding with a GTD Aston Martin, both Risi Ferraris exited and the Aston Martin continues to lap well behind after earlier mechanical issues.

Elsewhere, the CORE Oreca continues to hold firm in the PC class, now four laps up in what is a relatively depleted category. The GTD class remains closely matched though with the top five all on the lead lap, led by Scuderia Corsa Ferrari.

Meanwhile, the P class has dwindled, the highest profile casualty being the #1 ESM HPD ARX-04b, which had been enjoying a spirited run that belied its relative lack of development, occasionally featuring during the pit-stops sequences, only to his mechanical problems and join the sister car on the retirements' list.