DOVER, Del. -- William Byron found it was worth the wait at the Monster Mile.
The 17-year-old from Charlotte, North Carolina, raised the 2015 NASCAR K&N Pro Series East championship trophy Saturday afternoon at Dover International Speedway. His No. 9 Liberty University Chevrolet finished ninth in the Drive Sober 125 presented by the Delaware Office of Highway Safety.
The delay didn't slow down Sunoco Rookie of the Year candidate Collin Cabre, either, as the 21-year-old from Tampa, Florida, scored his first career victory.
The series finale was postponed from Friday because of inclement weather. It was originally moved to early Saturday morning, and then additional rain pushed the green flag start to 12:30 p.m. Practice and qualifying was washed out and the starting lineup was set according to the rulebook.
Cabre became the sixth different driver from the NASCAR Drive For Diversity program to win a NASCAR K&N Pro Series East race and gave Rev Racing, which has fielded the competition team for the program since 2010, its 17th win.
Cabre's No. 2 UTI/NTI Toyota crossed the finish line 6.454 seconds in front of series veteran Eddie MacDonald.
Byron entered the event with a 13-point lead over teammate Scott Heckert and 14 over two-time Dover winner Austin Hill. But Hill dropped out of the race while running third on Lap 36 because of a mechanical issue, and Byron led enough early laps that he needed to just finish in the top 10 to ensure the title.
Rico Abreu finished third, followed by Spencer Davis and Nick Drake.
JJ Haley, Corey LaJoie, Landon Cassill, Byron and Heckert completed the top 10.
Byron led the championship standings since the third race of the season. He completed the season with four wins, five top fives and 11 top 10s in 14 starts to become the fourth youngest champion in series history. At 17 years, 10 months and 4 days, he trails only Joey Logano, who was the youngest winner when he captured the title in 2007, Ryan Truex (2009) and Ben Rhodes (2014).
Byron also follows Dylan Kwasniewski (2013) and Rhodes in giving HScott Motorsports With Justin Marks its third consecutive K&N Pro Series East championship.
The Drive Sober 125 will air on NBCSN on Tuesday, Oct. 6 at 4 p.m. The race aired live on MRN Radio.
Byron and the rest of the top NASCAR K&N Pro Series East drivers will be honored at the NASCAR Touring Night of Champions Awards at the Charlotte Convention Center/NASCAR Hall of Fame in Charlotte, North Carolina, on Saturday, Dec. 12.