Updated

How tough is it to win at NASCAR's highest level? Plenty tough.

In the nearly 6 ½ years and 230 races since the start of the 2010 season, just nine NASCAR Sprint Cup Series drivers have posted double-digit victory totals.

That works out to about 1.5 victories per year. Should be easy, right? It's not. Which is exactly why so few people have managed it. Here are the nine who have.

CARL EDWARDS, 11 -- If nothing else, Edwards is consistent. Since 2010, he's won two races a season four different times, including this year.

TONY STEWART, 11 --After going winless in the 2011 Sprint Cup regular season, Stewart won five of the 10 races in the Chase for the NASCAR Sprint Cup. That hot streak propelled him to his third series title.

JOEY LOGANO, 13 -- Winless in points races so far this year, Logano won a series-high six times last year and five more in 2014, all with Team Penske.

BRAD KESELOWSKI, 18 -- Already a two-time winner this year, Keselowski won six races in his championship season of 2012 and five more in 2014.

MATT KENSETH, 19 -- Since moving to Joe Gibbs Racing in 2013, Kenseth has won 13 races, an impressive total. He likely will add to that total before the year is out.

DENNY HAMLIN, 19 -- In 2010, Hamlin tore the series up, winning eight races. But this year, he got the crown jewel as he won his first Daytona 500.

KEVIN HARVICK, 21 -- Always a front-runner, Harvick's career has taken off since joining Stewart-Haas Racing in 2014. He won the Sprint Cup title that year, finished second in 2015 and leads the points standings now.

KYLE BUSCH, 21 -- What's scary is that the younger Busch is just now entering the prime of his career and still has a huge upside. He already leads the series in 2016 with three victories.

JIMMIE JOHNSON, 30 -- Not much you can about Johnson's numbers other than to note that they are truly staggering. No wonder he's a six-time Sprint Cup champion and the active leader in series victories with 77.