SPARTA, Ky. ( Terry Blount / ESPN.com ) -- NASCAR was forced to postpone the Quaker State 400 until noon Sunday after waiting more than 90 minutes through persistent rain Saturday night at Kentucky Speedway.
"We knew it would be touch-and-go and from early in the morning we were tracking the weather," NASCAR spokesman Kerry Tharp said. "We dispatched the driers and they stayed out ahead of it, but the weather cells never did move out of the area and they looked like they would linger.
"It's a 90-minute to two-hour window with the best of conditions, and once it reached around 9 p.m. and it was still raining and in the forecast, we made the decision we thought was best."
This is the first time NASCAR was forced to postpone a Sprint Cup race since the 2012 season-opening Daytona 500, which was run on a Monday night.
This also is the first time any NASCAR event has been postponed at Kentucky Speedway in 11 years. The only time it happened previously was a 2002 Nationwide Series event. An ARCA race at Kentucky was postponed one day in 2004.
Kentucky Speedway officials were having problems drying the track Saturday night because of weepers, which is water seeping up through the asphalt.
The weather forecast for Sunday doesn't look good, either, with a 60 percent chance for scattered thundershowers.
Dale Earnhardt Jr. will start up front after earning his first pole of the season on Friday. Carl Edwards joins him on the front row