Acura and Cadillac battled through the night in the Rolex 24 at Daytona as a number of key rivals fell out of contention at the front of the field, leaving four cars with a realistic shot at victory with 10 hours remaining.

Recurring caution periods made it difficult for any car to build a sizeable lead at the front of the pack, with the biggest margin coming courtesy of Fernando Alonso's stint in the #10 Cadillac DPi for Wayne Taylor Racing that saw him move 20 seconds clear in the opening six hours.

Daytona 24 Hrs

One of WTR's strongest rivals, the #77 Mazda Team Joest entry, was forced to retire from the race in the seventh hour after a fire emerged on the back of the car, having started from pole on Saturday. The sister #55 Mazda entry also hit trouble after a fuel leak, causing it to drop a number of laps behind the leaders.

Action Express Racing's #31 Cadillac and the pair of Penske-run Acura DPi cars all took turns at the front of the pack along with the #10 Cadillac, driven by Alonso's teammate, Jordan Taylor, at the end of the 14th hour of racing. The quartet is currently covered by less than 10 seconds, with Felipe Nasr leading in the #31 Cadillac.

GTLM has offered a close fight between Porsche, Ferrari, Ford and BMW, with cautions again bunching the pack repeatedly. Porsche currently runs one-two with Laurens Vanthoor leading the class field in the #912 Porsche 911 RSR.

Corvette's hopes of victory were dashed overnight as both the #4 and #3 entries fell off the lead lap, the #3 having run out of fuel on-track, causing a full course caution.

Riley Motorsports heads the GTD pack with its #33 Mercedes-AMG GT3, sitting two seconds clear of the #88 WRT Speedstar Audi R8 LMS GT3, while LMP2 is boiling down to a intra-team battle between DragonSpeed's pair of Oreca 07 Gibsons, with the #81 entry currently sitting nine seconds clear.