DAYTONA BEACH - Daytona 500 winner Trevor Bayne says he's probably not going to attempt to run for the Sprint Cup championship this year.

The 20-year-old became the youngest winner in Daytona 500 history Sunday with a surprise victory in NASCAR's biggest race.

He's scheduled to run only 17 Cup races this season for the Wood Brothers while he competes for the Nationwide Series title for Roush-Fenway Racing.

NASCAR rules this season made drivers pick just one series to collect points, and Bayne chose the second-tier Nationwide Series.

He can change his mind, but he would not be given retroactive points for the Daytona 500.

NASCAR officials were still discussing Monday if his win would count toward seeding in the Chase for the Sprint Cup championship.

(Copyright 2011 by The Associated Press. All Rights Reserved.)