Rolex 24 At Daytona underway

Grand marshal Chip Ganassi gave the command to fire up the engines to a 50-car field Saturday afternoon, getting the 56th Rolex 24 At Daytona underway.

However, only 49 cars took the green flag at 2:40 p.m. ET. Robert Renauer in the No.58 Wright Motorsports Porsche 911 GT3 R had heavy contact on the formation lap, sending the car to the garage.

Polesitter Renger van der Zande led the field to the green and led the open lap – of 600-plus – in the defending race-winning No. 10 Konica Minolta Cadillac DPi-V.R.

It's currently 69 degrees and cloudy, with precipitation in the forecast for late Sunday morning into the afternoon.

Stay tuned to RACER.com for hourly updates and breaking news throughout the race.